396580

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:339

約数の個数: 24

約数和(自身を含む): 846720

約数和(自身を除く): 450140

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 251, 316, 395, 502, 790, 1004, 1255, 1580, 2510, 5020, 19829, 39658, 79316, 99145, 198290, 396580]

約数ペア:

[(1, 396580), (2, 198290), (4, 99145), (5, 79316), (10, 39658), (20, 19829), (79, 5020), (158, 2510), (251, 1580), (316, 1255), (395, 1004), (502, 790)]