20099261

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{227}}^1$

素因数の和:393

約数の個数: 24

約数和(自身を含む): 25472160

約数和(自身を除く): 5372899

約数列:

[1, 7, 13, 49, 91, 139, 227, 637, 973, 1589, 1807, 2951, 6811, 11123, 12649, 20657, 31553, 88543, 144599, 220871, 410189, 1546097, 2871323, 20099261]

約数ペア:

[(1, 20099261), (7, 2871323), (13, 1546097), (49, 410189), (91, 220871), (139, 144599), (227, 88543), (637, 31553), (973, 20657), (1589, 12649), (1807, 11123), (2951, 6811)]