64709240

素因数分解:

$2^3\times 5^1\times {\mathrm{733}}^1\times {\mathrm{2207}}^1$

素因数の和:2951

約数の個数: 32

約数和(自身を含む): 145860480

約数和(自身を除く): 81151240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 733, 1466, 2207, 2932, 3665, 4414, 5864, 7330, 8828, 11035, 14660, 17656, 22070, 29320, 44140, 88280, 1617731, 3235462, 6470924, 8088655, 12941848, 16177310, 32354620, 64709240]

約数ペア:

[(1, 64709240), (2, 32354620), (4, 16177310), (5, 12941848), (8, 8088655), (10, 6470924), (20, 3235462), (40, 1617731), (733, 88280), (1466, 44140), (2207, 29320), (2932, 22070), (3665, 17656), (4414, 14660), (5864, 11035), (7330, 8828)]