21919430

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{1637}}^1$

素因数の和:1760

約数の個数: 32

約数和(自身を含む): 42928704

約数和(自身を除く): 21009274

約数列:

[1, 2, 5, 10, 13, 26, 65, 103, 130, 206, 515, 1030, 1339, 1637, 2678, 3274, 6695, 8185, 13390, 16370, 21281, 42562, 106405, 168611, 212810, 337222, 843055, 1686110, 2191943, 4383886, 10959715, 21919430]

約数ペア:

[(1, 21919430), (2, 10959715), (5, 4383886), (10, 2191943), (13, 1686110), (26, 843055), (65, 337222), (103, 212810), (130, 168611), (206, 106405), (515, 42562), (1030, 21281), (1339, 16370), (1637, 13390), (2678, 8185), (3274, 6695)]