639261980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1483}}^1\times {\mathrm{3079}}^1$

素因数の和:4578

約数の個数: 48

約数和(自身を含む): 1535761920

約数和(自身を除く): 896499940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1483, 2966, 3079, 5932, 6158, 7415, 10381, 12316, 14830, 15395, 20762, 21553, 29660, 30790, 41524, 43106, 51905, 61580, 86212, 103810, 107765, 207620, 215530, 431060, 4566157, 9132314, 18264628, 22830785, 31963099, 45661570, 63926198, 91323140, 127852396, 159815495, 319630990, 639261980]

約数ペア:

[(1, 639261980), (2, 319630990), (4, 159815495), (5, 127852396), (7, 91323140), (10, 63926198), (14, 45661570), (20, 31963099), (28, 22830785), (35, 18264628), (70, 9132314), (140, 4566157), (1483, 431060), (2966, 215530), (3079, 207620), (5932, 107765), (6158, 103810), (7415, 86212), (10381, 61580), (12316, 51905), (14830, 43106), (15395, 41524), (20762, 30790), (21553, 29660)]