813850

素因数分解:

$2^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{397}}^1$

素因数の和:450

約数の個数: 24

約数和(自身を含む): 1554588

約数和(自身を除く): 740738

約数列:

[1, 2, 5, 10, 25, 41, 50, 82, 205, 397, 410, 794, 1025, 1985, 2050, 3970, 9925, 16277, 19850, 32554, 81385, 162770, 406925, 813850]

約数ペア:

[(1, 813850), (2, 406925), (5, 162770), (10, 81385), (25, 32554), (41, 19850), (50, 16277), (82, 9925), (205, 3970), (397, 2050), (410, 1985), (794, 1025)]