20023705

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{18121}}^1$

素因数の和:18156

約数の個数: 16

約数和(自身を含む): 27400464

約数和(自身を除く): 7376759

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 18121, 90605, 235573, 308057, 1177865, 1540285, 4004741, 20023705]

約数ペア:

[(1, 20023705), (5, 4004741), (13, 1540285), (17, 1177865), (65, 308057), (85, 235573), (221, 90605), (1105, 18121)]