665702960

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{640099}}^1$

素因数の和:640125

約数の個数: 40

約数和(自身を含む): 1666820400

約数和(自身を除く): 1001117440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 640099, 1280198, 2560396, 3200495, 5120792, 6400990, 8321287, 10241584, 12801980, 16642574, 25603960, 33285148, 41606435, 51207920, 66570296, 83212870, 133140592, 166425740, 332851480, 665702960]

約数ペア:

[(1, 665702960), (2, 332851480), (4, 166425740), (5, 133140592), (8, 83212870), (10, 66570296), (13, 51207920), (16, 41606435), (20, 33285148), (26, 25603960), (40, 16642574), (52, 12801980), (65, 10241584), (80, 8321287), (104, 6400990), (130, 5120792), (208, 3200495), (260, 2560396), (520, 1280198), (1040, 640099)]