20403929

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{11801}}^1$

素因数の和:11840

約数の個数: 16

約数和(自身を含む): 26436480

約数和(自身を除く): 6032551

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 11801, 82607, 153413, 224219, 1073891, 1569533, 2914847, 20403929]

約数ペア:

[(1, 20403929), (7, 2914847), (13, 1569533), (19, 1073891), (91, 224219), (133, 153413), (247, 82607), (1729, 11801)]