31303960

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{3709}}^1$

素因数の和:3931

約数の個数: 32

約数和(自身を含む): 70786800

約数和(自身を除く): 39482840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 3709, 4220, 7418, 8440, 14836, 18545, 29672, 37090, 74180, 148360, 782599, 1565198, 3130396, 3912995, 6260792, 7825990, 15651980, 31303960]

約数ペア:

[(1, 31303960), (2, 15651980), (4, 7825990), (5, 6260792), (8, 3912995), (10, 3130396), (20, 1565198), (40, 782599), (211, 148360), (422, 74180), (844, 37090), (1055, 29672), (1688, 18545), (2110, 14836), (3709, 8440), (4220, 7418)]