21540240

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29917}}^1$

素因数の和:29936

約数の個数: 60

約数和(自身を含む): 72341724

約数和(自身を除く): 50801484

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 29917, 59834, 89751, 119668, 149585, 179502, 239336, 269253, 299170, 359004, 448755, 478672, 538506, 598340, 718008, 897510, 1077012, 1196680, 1346265, 1436016, 1795020, 2154024, 2393360, 2692530, 3590040, 4308048, 5385060, 7180080, 10770120, 21540240]

約数ペア:

[(1, 21540240), (2, 10770120), (3, 7180080), (4, 5385060), (5, 4308048), (6, 3590040), (8, 2692530), (9, 2393360), (10, 2154024), (12, 1795020), (15, 1436016), (16, 1346265), (18, 1196680), (20, 1077012), (24, 897510), (30, 718008), (36, 598340), (40, 538506), (45, 478672), (48, 448755), (60, 359004), (72, 299170), (80, 269253), (90, 239336), (120, 179502), (144, 149585), (180, 119668), (240, 89751), (360, 59834), (720, 29917)]