161721160

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{212791}}^1$

素因数の和:212821

約数の個数: 32

約数和(自身を含む): 383025600

約数和(自身を除く): 221304440

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 212791, 425582, 851164, 1063955, 1702328, 2127910, 4043029, 4255820, 8086058, 8511640, 16172116, 20215145, 32344232, 40430290, 80860580, 161721160]

約数ペア:

[(1, 161721160), (2, 80860580), (4, 40430290), (5, 32344232), (8, 20215145), (10, 16172116), (19, 8511640), (20, 8086058), (38, 4255820), (40, 4043029), (76, 2127910), (95, 1702328), (152, 1063955), (190, 851164), (380, 425582), (760, 212791)]