21425405

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{179}}^1\times {\mathrm{647}}^1$

素因数の和:868

約数の個数: 16

約数和(自身を含む): 26593920

約数和(自身を除く): 5168515

約数列:

[1, 5, 37, 179, 185, 647, 895, 3235, 6623, 23939, 33115, 115813, 119695, 579065, 4285081, 21425405]

約数ペア:

[(1, 21425405), (5, 4285081), (37, 579065), (179, 119695), (185, 115813), (647, 33115), (895, 23939), (3235, 6623)]