639900212

素因数分解:

$2^2\times 7^2\times {\mathrm{467}}^1\times {\mathrm{6991}}^1$

素因数の和:7476

約数の個数: 36

約数和(自身を含む): 1305630144

約数和(自身を除く): 665729932

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 467, 934, 1868, 3269, 6538, 6991, 13076, 13982, 22883, 27964, 45766, 48937, 91532, 97874, 195748, 342559, 685118, 1370236, 3264797, 6529594, 13059188, 22853579, 45707158, 91414316, 159975053, 319950106, 639900212]

約数ペア:

[(1, 639900212), (2, 319950106), (4, 159975053), (7, 91414316), (14, 45707158), (28, 22853579), (49, 13059188), (98, 6529594), (196, 3264797), (467, 1370236), (934, 685118), (1868, 342559), (3269, 195748), (6538, 97874), (6991, 91532), (13076, 48937), (13982, 45766), (22883, 27964)]