397137494

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{491}}^1\times {\mathrm{2393}}^1$

素因数の和:2912

約数の個数: 24

約数和(自身を含む): 646638552

約数和(自身を除く): 249501058

約数列:

[1, 2, 13, 26, 169, 338, 491, 982, 2393, 4786, 6383, 12766, 31109, 62218, 82979, 165958, 404417, 808834, 1174963, 2349926, 15274519, 30549038, 198568747, 397137494]

約数ペア:

[(1, 397137494), (2, 198568747), (13, 30549038), (26, 15274519), (169, 2349926), (338, 1174963), (491, 808834), (982, 404417), (2393, 165958), (4786, 82979), (6383, 62218), (12766, 31109)]