8713240

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{3571}}^1$

素因数の和:3643

約数の個数: 32

約数和(自身を含む): 19931760

約数和(自身を除く): 11218520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 3571, 7142, 14284, 17855, 28568, 35710, 71420, 142840, 217831, 435662, 871324, 1089155, 1742648, 2178310, 4356620, 8713240]

約数ペア:

[(1, 8713240), (2, 4356620), (4, 2178310), (5, 1742648), (8, 1089155), (10, 871324), (20, 435662), (40, 217831), (61, 142840), (122, 71420), (244, 35710), (305, 28568), (488, 17855), (610, 14284), (1220, 7142), (2440, 3571)]