640626

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{2179}}^1$

素因数の和:2198

約数の個数: 24

約数和(自身を含む): 1491120

約数和(自身を除く): 850494

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 147, 294, 2179, 4358, 6537, 13074, 15253, 30506, 45759, 91518, 106771, 213542, 320313, 640626]

約数ペア:

[(1, 640626), (2, 320313), (3, 213542), (6, 106771), (7, 91518), (14, 45759), (21, 30506), (42, 15253), (49, 13074), (98, 6537), (147, 4358), (294, 2179)]