21249840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{2393}}^1$

素因数の和:2446

約数の個数: 80

約数和(自身を含む): 67683168

約数和(自身を除く): 46433328

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 37, 40, 48, 60, 74, 80, 111, 120, 148, 185, 222, 240, 296, 370, 444, 555, 592, 740, 888, 1110, 1480, 1776, 2220, 2393, 2960, 4440, 4786, 7179, 8880, 9572, 11965, 14358, 19144, 23930, 28716, 35895, 38288, 47860, 57432, 71790, 88541, 95720, 114864, 143580, 177082, 191440, 265623, 287160, 354164, 442705, 531246, 574320, 708328, 885410, 1062492, 1328115, 1416656, 1770820, 2124984, 2656230, 3541640, 4249968, 5312460, 7083280, 10624920, 21249840]

約数ペア:

[(1, 21249840), (2, 10624920), (3, 7083280), (4, 5312460), (5, 4249968), (6, 3541640), (8, 2656230), (10, 2124984), (12, 1770820), (15, 1416656), (16, 1328115), (20, 1062492), (24, 885410), (30, 708328), (37, 574320), (40, 531246), (48, 442705), (60, 354164), (74, 287160), (80, 265623), (111, 191440), (120, 177082), (148, 143580), (185, 114864), (222, 95720), (240, 88541), (296, 71790), (370, 57432), (444, 47860), (555, 38288), (592, 35895), (740, 28716), (888, 23930), (1110, 19144), (1480, 14358), (1776, 11965), (2220, 9572), (2393, 8880), (2960, 7179), (4440, 4786)]