20408570

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{547}}^1$

素因数の和:615

約数の個数: 64

約数和(自身を含む): 46400256

約数和(自身を除く): 25991686

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 41, 65, 70, 82, 91, 130, 182, 205, 287, 410, 455, 533, 547, 574, 910, 1066, 1094, 1435, 2665, 2735, 2870, 3731, 3829, 5330, 5470, 7111, 7462, 7658, 14222, 18655, 19145, 22427, 35555, 37310, 38290, 44854, 49777, 71110, 99554, 112135, 156989, 224270, 248885, 291551, 313978, 497770, 583102, 784945, 1457755, 1569890, 2040857, 2915510, 4081714, 10204285, 20408570]

約数ペア:

[(1, 20408570), (2, 10204285), (5, 4081714), (7, 2915510), (10, 2040857), (13, 1569890), (14, 1457755), (26, 784945), (35, 583102), (41, 497770), (65, 313978), (70, 291551), (82, 248885), (91, 224270), (130, 156989), (182, 112135), (205, 99554), (287, 71110), (410, 49777), (455, 44854), (533, 38290), (547, 37310), (574, 35555), (910, 22427), (1066, 19145), (1094, 18655), (1435, 14222), (2665, 7658), (2735, 7462), (2870, 7111), (3731, 5470), (3829, 5330)]