31612040

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{11131}}^1$

素因数の和:11213

約数の個数: 32

約数和(自身を含む): 72135360

約数和(自身を除く): 40523320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 11131, 22262, 44524, 55655, 89048, 111310, 222620, 445240, 790301, 1580602, 3161204, 3951505, 6322408, 7903010, 15806020, 31612040]

約数ペア:

[(1, 31612040), (2, 15806020), (4, 7903010), (5, 6322408), (8, 3951505), (10, 3161204), (20, 1580602), (40, 790301), (71, 445240), (142, 222620), (284, 111310), (355, 89048), (568, 55655), (710, 44524), (1420, 22262), (2840, 11131)]