71395280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{81131}}^1$

素因数の和:81155

約数の個数: 40

約数和(自身を含む): 181086624

約数和(自身を除く): 109691344

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 81131, 162262, 324524, 405655, 649048, 811310, 892441, 1298096, 1622620, 1784882, 3245240, 3569764, 4462205, 6490480, 7139528, 8924410, 14279056, 17848820, 35697640, 71395280]

約数ペア:

[(1, 71395280), (2, 35697640), (4, 17848820), (5, 14279056), (8, 8924410), (10, 7139528), (11, 6490480), (16, 4462205), (20, 3569764), (22, 3245240), (40, 1784882), (44, 1622620), (55, 1298096), (80, 892441), (88, 811310), (110, 649048), (176, 405655), (220, 324524), (440, 162262), (880, 81131)]