857485240

素因数分解:

$2^3\times 5^1\times {\mathrm{821}}^1\times {\mathrm{26111}}^1$

素因数の和:26943

約数の個数: 32

約数和(自身を含む): 1931765760

約数和(自身を除く): 1074280520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 821, 1642, 3284, 4105, 6568, 8210, 16420, 26111, 32840, 52222, 104444, 130555, 208888, 261110, 522220, 1044440, 21437131, 42874262, 85748524, 107185655, 171497048, 214371310, 428742620, 857485240]

約数ペア:

[(1, 857485240), (2, 428742620), (4, 214371310), (5, 171497048), (8, 107185655), (10, 85748524), (20, 42874262), (40, 21437131), (821, 1044440), (1642, 522220), (3284, 261110), (4105, 208888), (6568, 130555), (8210, 104444), (16420, 52222), (26111, 32840)]