18882720

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:105

約数の個数: 240

約数和(自身を含む): 70253568

約数和(自身を除く): 51370848

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 31, 32, 36, 40, 45, 47, 48, 54, 60, 62, 72, 80, 81, 90, 93, 94, 96, 108, 120, 124, 135, 141, 144, 155, 160, 162, 180, 186, 188, 216, 235, 240, 248, 270, 279, 282, 288, 310, 324, 360, 372, 376, 405, 423, 432, 465, 470, 480, 496, 540, 558, 564, 620, 648, 705, 720, 744, 752, 810, 837, 846, 864, 930, 940, 992, 1080, 1116, 1128, 1240, 1269, 1296, 1395, 1410, 1440, 1457, 1488, 1504, 1620, 1674, 1692, 1860, 1880, 2115, 2160, 2232, 2256, 2480, 2511, 2538, 2592, 2790, 2820, 2914, 2976, 3240, 3348, 3384, 3720, 3760, 3807, 4185, 4230, 4320, 4371, 4464, 4512, 4960, 5022, 5076, 5580, 5640, 5828, 6345, 6480, 6696, 6768, 7285, 7440, 7520, 7614, 8370, 8460, 8742, 8928, 10044, 10152, 11160, 11280, 11656, 12555, 12690, 12960, 13113, 13392, 13536, 14570, 14880, 15228, 16740, 16920, 17484, 19035, 20088, 20304, 21855, 22320, 22560, 23312, 25110, 25380, 26226, 26784, 29140, 30456, 33480, 33840, 34968, 38070, 39339, 40176, 40608, 43710, 44640, 46624, 50220, 50760, 52452, 58280, 60912, 65565, 66960, 67680, 69936, 76140, 78678, 80352, 87420, 100440, 101520, 104904, 116560, 118017, 121824, 131130, 133920, 139872, 152280, 157356, 174840, 196695, 200880, 203040, 209808, 233120, 236034, 262260, 304560, 314712, 349680, 393390, 401760, 419616, 472068, 524520, 590085, 609120, 629424, 699360, 786780, 944136, 1049040, 1180170, 1258848, 1573560, 1888272, 2098080, 2360340, 3147120, 3776544, 4720680, 6294240, 9441360, 18882720]

約数ペア:

[(1, 18882720), (2, 9441360), (3, 6294240), (4, 4720680), (5, 3776544), (6, 3147120), (8, 2360340), (9, 2098080), (10, 1888272), (12, 1573560), (15, 1258848), (16, 1180170), (18, 1049040), (20, 944136), (24, 786780), (27, 699360), (30, 629424), (31, 609120), (32, 590085), (36, 524520), (40, 472068), (45, 419616), (47, 401760), (48, 393390), (54, 349680), (60, 314712), (62, 304560), (72, 262260), (80, 236034), (81, 233120), (90, 209808), (93, 203040), (94, 200880), (96, 196695), (108, 174840), (120, 157356), (124, 152280), (135, 139872), (141, 133920), (144, 131130), (155, 121824), (160, 118017), (162, 116560), (180, 104904), (186, 101520), (188, 100440), (216, 87420), (235, 80352), (240, 78678), (248, 76140), (270, 69936), (279, 67680), (282, 66960), (288, 65565), (310, 60912), (324, 58280), (360, 52452), (372, 50760), (376, 50220), (405, 46624), (423, 44640), (432, 43710), (465, 40608), (470, 40176), (480, 39339), (496, 38070), (540, 34968), (558, 33840), (564, 33480), (620, 30456), (648, 29140), (705, 26784), (720, 26226), (744, 25380), (752, 25110), (810, 23312), (837, 22560), (846, 22320), (864, 21855), (930, 20304), (940, 20088), (992, 19035), (1080, 17484), (1116, 16920), (1128, 16740), (1240, 15228), (1269, 14880), (1296, 14570), (1395, 13536), (1410, 13392), (1440, 13113), (1457, 12960), (1488, 12690), (1504, 12555), (1620, 11656), (1674, 11280), (1692, 11160), (1860, 10152), (1880, 10044), (2115, 8928), (2160, 8742), (2232, 8460), (2256, 8370), (2480, 7614), (2511, 7520), (2538, 7440), (2592, 7285), (2790, 6768), (2820, 6696), (2914, 6480), (2976, 6345), (3240, 5828), (3348, 5640), (3384, 5580), (3720, 5076), (3760, 5022), (3807, 4960), (4185, 4512), (4230, 4464), (4320, 4371)]