20405135090

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{15576439}}^1$

素因数の和:15576577

約数の個数: 16

約数和(自身を含む): 37009621440

約数和(自身を除く): 16604486350

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 15576439, 31152878, 77882195, 155764390, 2040513509, 4081027018, 10202567545, 20405135090]

約数ペア:

[(1, 20405135090), (2, 10202567545), (5, 4081027018), (10, 2040513509), (131, 155764390), (262, 77882195), (655, 31152878), (1310, 15576439)]