20265505

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{2243}}^1$

素因数の和:2400

約数の個数: 16

約数和(自身を含む): 26389440

約数和(自身を除く): 6123935

約数列:

[1, 5, 13, 65, 139, 695, 1807, 2243, 9035, 11215, 29159, 145795, 311777, 1558885, 4053101, 20265505]

約数ペア:

[(1, 20265505), (5, 4053101), (13, 1558885), (65, 311777), (139, 145795), (695, 29159), (1807, 11215), (2243, 9035)]