20656909

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{4283}}^1$

素因数の和:4356

約数の個数: 16

約数和(自身を含む): 25909632

約数和(自身を除く): 5252723

約数列:

[1, 7, 13, 53, 91, 371, 689, 4283, 4823, 29981, 55679, 226999, 389753, 1588993, 2950987, 20656909]

約数ペア:

[(1, 20656909), (7, 2950987), (13, 1588993), (53, 389753), (91, 226999), (371, 55679), (689, 29981), (4283, 4823)]