21282960

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1249}}^1$

素因数の和:1336

約数の個数: 80

約数和(自身を含む): 66960000

約数和(自身を除く): 45677040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 71, 80, 120, 142, 213, 240, 284, 355, 426, 568, 710, 852, 1065, 1136, 1249, 1420, 1704, 2130, 2498, 2840, 3408, 3747, 4260, 4996, 5680, 6245, 7494, 8520, 9992, 12490, 14988, 17040, 18735, 19984, 24980, 29976, 37470, 49960, 59952, 74940, 88679, 99920, 149880, 177358, 266037, 299760, 354716, 443395, 532074, 709432, 886790, 1064148, 1330185, 1418864, 1773580, 2128296, 2660370, 3547160, 4256592, 5320740, 7094320, 10641480, 21282960]

約数ペア:

[(1, 21282960), (2, 10641480), (3, 7094320), (4, 5320740), (5, 4256592), (6, 3547160), (8, 2660370), (10, 2128296), (12, 1773580), (15, 1418864), (16, 1330185), (20, 1064148), (24, 886790), (30, 709432), (40, 532074), (48, 443395), (60, 354716), (71, 299760), (80, 266037), (120, 177358), (142, 149880), (213, 99920), (240, 88679), (284, 74940), (355, 59952), (426, 49960), (568, 37470), (710, 29976), (852, 24980), (1065, 19984), (1136, 18735), (1249, 17040), (1420, 14988), (1704, 12490), (2130, 9992), (2498, 8520), (2840, 7494), (3408, 6245), (3747, 5680), (4260, 4996)]