20717450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31873}}^1$

素因数の和:31898

約数の個数: 24

約数和(自身を含む): 41499948

約数和(自身を除く): 20782498

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 31873, 63746, 159365, 318730, 414349, 796825, 828698, 1593650, 2071745, 4143490, 10358725, 20717450]

約数ペア:

[(1, 20717450), (2, 10358725), (5, 4143490), (10, 2071745), (13, 1593650), (25, 828698), (26, 796825), (50, 414349), (65, 318730), (130, 159365), (325, 63746), (650, 31873)]