81417420

素因数分解:

$2^2\times 3^3\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{181}}^1$

素因数の和:230

約数の個数: 288

約数和(自身を含む): 313709760

約数和(自身を除く): 232292340

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 18, 20, 21, 27, 28, 30, 34, 35, 36, 42, 45, 49, 51, 54, 60, 63, 68, 70, 84, 85, 90, 98, 102, 105, 108, 119, 126, 135, 140, 147, 153, 170, 180, 181, 189, 196, 204, 210, 238, 245, 252, 255, 270, 294, 306, 315, 340, 357, 362, 378, 420, 441, 459, 476, 490, 510, 540, 543, 588, 595, 612, 630, 714, 724, 735, 756, 765, 833, 882, 905, 918, 945, 980, 1020, 1071, 1086, 1190, 1260, 1267, 1323, 1428, 1470, 1530, 1629, 1666, 1764, 1785, 1810, 1836, 1890, 2142, 2172, 2205, 2295, 2380, 2499, 2534, 2646, 2715, 2940, 3060, 3077, 3213, 3258, 3332, 3570, 3620, 3780, 3801, 4165, 4284, 4410, 4590, 4887, 4998, 5068, 5292, 5355, 5430, 6154, 6335, 6426, 6516, 6615, 7140, 7497, 7602, 8145, 8330, 8820, 8869, 9180, 9231, 9774, 9996, 10710, 10860, 11403, 12308, 12495, 12670, 12852, 13230, 14994, 15204, 15385, 16065, 16290, 16660, 17738, 18462, 19005, 19548, 21420, 21539, 22491, 22806, 24435, 24990, 25340, 26460, 26607, 27693, 29988, 30770, 32130, 32580, 34209, 35476, 36924, 37485, 38010, 43078, 44345, 44982, 45612, 46155, 48870, 49980, 53214, 55386, 57015, 61540, 64260, 64617, 68418, 74970, 76020, 79821, 83079, 86156, 88690, 89964, 92310, 97740, 106428, 107695, 110772, 112455, 114030, 129234, 133035, 136836, 138465, 149940, 150773, 159642, 166158, 171045, 177380, 184620, 193851, 215390, 224910, 228060, 239463, 258468, 266070, 276930, 301546, 319284, 323085, 332316, 342090, 387702, 399105, 415395, 430780, 449820, 452319, 478926, 532140, 553860, 581553, 603092, 646170, 684180, 753865, 775404, 798210, 830790, 904638, 957852, 969255, 1163106, 1197315, 1292340, 1356957, 1507730, 1596420, 1661580, 1809276, 1938510, 2261595, 2326212, 2394630, 2713914, 2907765, 3015460, 3877020, 4070871, 4523190, 4789260, 5427828, 5815530, 6784785, 8141742, 9046380, 11631060, 13569570, 16283484, 20354355, 27139140, 40708710, 81417420]

約数ペア:

[(1, 81417420), (2, 40708710), (3, 27139140), (4, 20354355), (5, 16283484), (6, 13569570), (7, 11631060), (9, 9046380), (10, 8141742), (12, 6784785), (14, 5815530), (15, 5427828), (17, 4789260), (18, 4523190), (20, 4070871), (21, 3877020), (27, 3015460), (28, 2907765), (30, 2713914), (34, 2394630), (35, 2326212), (36, 2261595), (42, 1938510), (45, 1809276), (49, 1661580), (51, 1596420), (54, 1507730), (60, 1356957), (63, 1292340), (68, 1197315), (70, 1163106), (84, 969255), (85, 957852), (90, 904638), (98, 830790), (102, 798210), (105, 775404), (108, 753865), (119, 684180), (126, 646170), (135, 603092), (140, 581553), (147, 553860), (153, 532140), (170, 478926), (180, 452319), (181, 449820), (189, 430780), (196, 415395), (204, 399105), (210, 387702), (238, 342090), (245, 332316), (252, 323085), (255, 319284), (270, 301546), (294, 276930), (306, 266070), (315, 258468), (340, 239463), (357, 228060), (362, 224910), (378, 215390), (420, 193851), (441, 184620), (459, 177380), (476, 171045), (490, 166158), (510, 159642), (540, 150773), (543, 149940), (588, 138465), (595, 136836), (612, 133035), (630, 129234), (714, 114030), (724, 112455), (735, 110772), (756, 107695), (765, 106428), (833, 97740), (882, 92310), (905, 89964), (918, 88690), (945, 86156), (980, 83079), (1020, 79821), (1071, 76020), (1086, 74970), (1190, 68418), (1260, 64617), (1267, 64260), (1323, 61540), (1428, 57015), (1470, 55386), (1530, 53214), (1629, 49980), (1666, 48870), (1764, 46155), (1785, 45612), (1810, 44982), (1836, 44345), (1890, 43078), (2142, 38010), (2172, 37485), (2205, 36924), (2295, 35476), (2380, 34209), (2499, 32580), (2534, 32130), (2646, 30770), (2715, 29988), (2940, 27693), (3060, 26607), (3077, 26460), (3213, 25340), (3258, 24990), (3332, 24435), (3570, 22806), (3620, 22491), (3780, 21539), (3801, 21420), (4165, 19548), (4284, 19005), (4410, 18462), (4590, 17738), (4887, 16660), (4998, 16290), (5068, 16065), (5292, 15385), (5355, 15204), (5430, 14994), (6154, 13230), (6335, 12852), (6426, 12670), (6516, 12495), (6615, 12308), (7140, 11403), (7497, 10860), (7602, 10710), (8145, 9996), (8330, 9774), (8820, 9231), (8869, 9180)]