20119580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77383}}^1$

素因数の和:77405

約数の個数: 24

約数和(自身を含む): 45501792

約数和(自身を除く): 25382212

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77383, 154766, 309532, 386915, 773830, 1005979, 1547660, 2011958, 4023916, 5029895, 10059790, 20119580]

約数ペア:

[(1, 20119580), (2, 10059790), (4, 5029895), (5, 4023916), (10, 2011958), (13, 1547660), (20, 1005979), (26, 773830), (52, 386915), (65, 309532), (130, 154766), (260, 77383)]