51383960

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{21059}}^1$

素因数の和:21131

約数の個数: 32

約数和(自身を含む): 117514800

約数和(自身を除く): 66130840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 21059, 42118, 84236, 105295, 168472, 210590, 421180, 842360, 1284599, 2569198, 5138396, 6422995, 10276792, 12845990, 25691980, 51383960]

約数ペア:

[(1, 51383960), (2, 25691980), (4, 12845990), (5, 10276792), (8, 6422995), (10, 5138396), (20, 2569198), (40, 1284599), (61, 842360), (122, 421180), (244, 210590), (305, 168472), (488, 105295), (610, 84236), (1220, 42118), (2440, 21059)]