645617756

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{490591}}^1$

素因数の和:490649

約数の個数: 24

約数和(自身を含む): 1318711296

約数和(自身を除く): 673093540

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 658, 1316, 490591, 981182, 1962364, 3434137, 6868274, 13736548, 23057777, 46115554, 92231108, 161404439, 322808878, 645617756]

約数ペア:

[(1, 645617756), (2, 322808878), (4, 161404439), (7, 92231108), (14, 46115554), (28, 23057777), (47, 13736548), (94, 6868274), (188, 3434137), (329, 1962364), (658, 981182), (1316, 490591)]