20513090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157793}}^1$

素因数の和:157813

約数の個数: 16

約数和(自身を含む): 39764088

約数和(自身を除く): 19250998

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 157793, 315586, 788965, 1577930, 2051309, 4102618, 10256545, 20513090]

約数ペア:

[(1, 20513090), (2, 10256545), (5, 4102618), (10, 2051309), (13, 1577930), (26, 788965), (65, 315586), (130, 157793)]