20810790

素因数分解:

$2^1\times 3^3\times 5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1$

素因数の和:65

約数の個数: 288

約数和(自身を含む): 76416480

約数和(自身を除く): 55605690

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 11, 13, 14, 15, 18, 21, 22, 26, 27, 30, 33, 35, 39, 42, 45, 49, 54, 55, 63, 65, 66, 70, 77, 78, 90, 91, 98, 99, 105, 110, 117, 121, 126, 130, 135, 143, 147, 154, 165, 182, 189, 195, 198, 210, 231, 234, 242, 245, 270, 273, 286, 294, 297, 315, 330, 351, 363, 378, 385, 390, 429, 441, 455, 462, 490, 495, 539, 546, 585, 594, 605, 630, 637, 693, 702, 715, 726, 735, 770, 819, 847, 858, 882, 910, 945, 990, 1001, 1078, 1089, 1155, 1170, 1210, 1274, 1287, 1323, 1365, 1386, 1430, 1470, 1485, 1573, 1617, 1638, 1694, 1755, 1815, 1890, 1911, 2002, 2079, 2145, 2178, 2205, 2310, 2457, 2541, 2574, 2646, 2695, 2730, 2970, 3003, 3146, 3185, 3234, 3267, 3465, 3510, 3630, 3822, 3861, 4095, 4158, 4235, 4290, 4410, 4719, 4851, 4914, 5005, 5082, 5390, 5445, 5733, 5929, 6006, 6370, 6435, 6534, 6615, 6930, 7007, 7623, 7722, 7865, 8085, 8190, 8470, 9009, 9438, 9555, 9702, 10010, 10395, 10890, 11011, 11466, 11858, 12285, 12705, 12870, 13230, 14014, 14157, 14553, 15015, 15246, 15730, 16170, 16335, 17199, 17787, 18018, 19110, 19305, 20790, 21021, 22022, 22869, 23595, 24255, 24570, 25410, 27027, 28314, 28665, 29106, 29645, 30030, 32670, 33033, 34398, 35035, 35574, 38115, 38610, 42042, 42471, 45045, 45738, 47190, 48510, 53361, 54054, 55055, 57330, 59290, 63063, 66066, 70070, 70785, 72765, 76230, 77077, 84942, 85995, 88935, 90090, 99099, 105105, 106722, 110110, 114345, 126126, 135135, 141570, 145530, 154154, 160083, 165165, 171990, 177870, 189189, 198198, 210210, 212355, 228690, 231231, 266805, 270270, 297297, 315315, 320166, 330330, 378378, 385385, 424710, 462462, 495495, 533610, 594594, 630630, 693693, 770770, 800415, 945945, 990990, 1156155, 1387386, 1486485, 1600830, 1891890, 2081079, 2312310, 2972970, 3468465, 4162158, 6936930, 10405395, 20810790]

約数ペア:

[(1, 20810790), (2, 10405395), (3, 6936930), (5, 4162158), (6, 3468465), (7, 2972970), (9, 2312310), (10, 2081079), (11, 1891890), (13, 1600830), (14, 1486485), (15, 1387386), (18, 1156155), (21, 990990), (22, 945945), (26, 800415), (27, 770770), (30, 693693), (33, 630630), (35, 594594), (39, 533610), (42, 495495), (45, 462462), (49, 424710), (54, 385385), (55, 378378), (63, 330330), (65, 320166), (66, 315315), (70, 297297), (77, 270270), (78, 266805), (90, 231231), (91, 228690), (98, 212355), (99, 210210), (105, 198198), (110, 189189), (117, 177870), (121, 171990), (126, 165165), (130, 160083), (135, 154154), (143, 145530), (147, 141570), (154, 135135), (165, 126126), (182, 114345), (189, 110110), (195, 106722), (198, 105105), (210, 99099), (231, 90090), (234, 88935), (242, 85995), (245, 84942), (270, 77077), (273, 76230), (286, 72765), (294, 70785), (297, 70070), (315, 66066), (330, 63063), (351, 59290), (363, 57330), (378, 55055), (385, 54054), (390, 53361), (429, 48510), (441, 47190), (455, 45738), (462, 45045), (490, 42471), (495, 42042), (539, 38610), (546, 38115), (585, 35574), (594, 35035), (605, 34398), (630, 33033), (637, 32670), (693, 30030), (702, 29645), (715, 29106), (726, 28665), (735, 28314), (770, 27027), (819, 25410), (847, 24570), (858, 24255), (882, 23595), (910, 22869), (945, 22022), (990, 21021), (1001, 20790), (1078, 19305), (1089, 19110), (1155, 18018), (1170, 17787), (1210, 17199), (1274, 16335), (1287, 16170), (1323, 15730), (1365, 15246), (1386, 15015), (1430, 14553), (1470, 14157), (1485, 14014), (1573, 13230), (1617, 12870), (1638, 12705), (1694, 12285), (1755, 11858), (1815, 11466), (1890, 11011), (1911, 10890), (2002, 10395), (2079, 10010), (2145, 9702), (2178, 9555), (2205, 9438), (2310, 9009), (2457, 8470), (2541, 8190), (2574, 8085), (2646, 7865), (2695, 7722), (2730, 7623), (2970, 7007), (3003, 6930), (3146, 6615), (3185, 6534), (3234, 6435), (3267, 6370), (3465, 6006), (3510, 5929), (3630, 5733), (3822, 5445), (3861, 5390), (4095, 5082), (4158, 5005), (4235, 4914), (4290, 4851), (4410, 4719)]