64707920

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{42571}}^1$

素因数の和:42603

約数の個数: 40

約数和(自身を含む): 158367840

約数和(自身を除く): 93659920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 42571, 85142, 170284, 212855, 340568, 425710, 681136, 808849, 851420, 1617698, 1702840, 3235396, 3405680, 4044245, 6470792, 8088490, 12941584, 16176980, 32353960, 64707920]

約数ペア:

[(1, 64707920), (2, 32353960), (4, 16176980), (5, 12941584), (8, 8088490), (10, 6470792), (16, 4044245), (19, 3405680), (20, 3235396), (38, 1702840), (40, 1617698), (76, 851420), (80, 808849), (95, 681136), (152, 425710), (190, 340568), (304, 212855), (380, 170284), (760, 85142), (1520, 42571)]