31889840

素因数分解:

$2^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2539}}^1$

素因数の和:2709

約数の個数: 40

約数和(自身を含む): 74645520

約数和(自身を除く): 42755680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 157, 314, 628, 785, 1256, 1570, 2512, 2539, 3140, 5078, 6280, 10156, 12560, 12695, 20312, 25390, 40624, 50780, 101560, 203120, 398623, 797246, 1594492, 1993115, 3188984, 3986230, 6377968, 7972460, 15944920, 31889840]

約数ペア:

[(1, 31889840), (2, 15944920), (4, 7972460), (5, 6377968), (8, 3986230), (10, 3188984), (16, 1993115), (20, 1594492), (40, 797246), (80, 398623), (157, 203120), (314, 101560), (628, 50780), (785, 40624), (1256, 25390), (1570, 20312), (2512, 12695), (2539, 12560), (3140, 10156), (5078, 6280)]