638631

素因数分解:

$3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:156

約数の個数: 32

約数和(自身を含む): 1126400

約数和(自身を除く): 487769

約数列:

[1, 3, 7, 9, 21, 27, 31, 63, 93, 109, 189, 217, 279, 327, 651, 763, 837, 981, 1953, 2289, 2943, 3379, 5859, 6867, 10137, 20601, 23653, 30411, 70959, 91233, 212877, 638631]

約数ペア:

[(1, 638631), (3, 212877), (7, 91233), (9, 70959), (21, 30411), (27, 23653), (31, 20601), (63, 10137), (93, 6867), (109, 5859), (189, 3379), (217, 2943), (279, 2289), (327, 1953), (651, 981), (763, 837)]