247471880

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{143879}}^1$

素因数の和:143933

約数の個数: 32

約数和(自身を含む): 569764800

約数和(自身を除く): 322292920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 143879, 287758, 575516, 719395, 1151032, 1438790, 2877580, 5755160, 6186797, 12373594, 24747188, 30933985, 49494376, 61867970, 123735940, 247471880]

約数ペア:

[(1, 247471880), (2, 123735940), (4, 61867970), (5, 49494376), (8, 30933985), (10, 24747188), (20, 12373594), (40, 6186797), (43, 5755160), (86, 2877580), (172, 1438790), (215, 1151032), (344, 719395), (430, 575516), (860, 287758), (1720, 143879)]