645905986

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{353}}^1\times {\mathrm{7561}}^1$

素因数の和:7938

約数の個数: 24

約数和(自身を含む): 1068102252

約数和(自身を除く): 422196266

約数列:

[1, 2, 11, 22, 121, 242, 353, 706, 3883, 7561, 7766, 15122, 42713, 83171, 85426, 166342, 914881, 1829762, 2669033, 5338066, 29359363, 58718726, 322952993, 645905986]

約数ペア:

[(1, 645905986), (2, 322952993), (11, 58718726), (22, 29359363), (121, 5338066), (242, 2669033), (353, 1829762), (706, 914881), (3883, 166342), (7561, 85426), (7766, 83171), (15122, 42713)]