638754998

素因数分解:

$2^1\times 7^1\times {\mathrm{1447}}^1\times {\mathrm{31531}}^1$

素因数の和:32987

約数の個数: 16

約数和(自身を含む): 1095800064

約数和(自身を除く): 457045066

約数列:

[1, 2, 7, 14, 1447, 2894, 10129, 20258, 31531, 63062, 220717, 441434, 45625357, 91250714, 319377499, 638754998]

約数ペア:

[(1, 638754998), (2, 319377499), (7, 91250714), (14, 45625357), (1447, 441434), (2894, 220717), (10129, 63062), (20258, 31531)]