20725016

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{571}}^1$

素因数の和:939

約数の個数: 32

約数和(自身を含む): 42042000

約数和(自身を除く): 21316984

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 349, 571, 698, 1142, 1396, 2284, 2792, 4537, 4568, 7423, 9074, 14846, 18148, 29692, 36296, 59384, 199279, 398558, 797116, 1594232, 2590627, 5181254, 10362508, 20725016]

約数ペア:

[(1, 20725016), (2, 10362508), (4, 5181254), (8, 2590627), (13, 1594232), (26, 797116), (52, 398558), (104, 199279), (349, 59384), (571, 36296), (698, 29692), (1142, 18148), (1396, 14846), (2284, 9074), (2792, 7423), (4537, 4568)]