19881788

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{223}}^1\times {\mathrm{719}}^1$

素因数の和:977

約数の個数: 24

約数和(自身を含む): 36126720

約数和(自身を除く): 16244932

約数列:

[1, 2, 4, 31, 62, 124, 223, 446, 719, 892, 1438, 2876, 6913, 13826, 22289, 27652, 44578, 89156, 160337, 320674, 641348, 4970447, 9940894, 19881788]

約数ペア:

[(1, 19881788), (2, 9940894), (4, 4970447), (31, 641348), (62, 320674), (124, 160337), (223, 89156), (446, 44578), (719, 27652), (892, 22289), (1438, 13826), (2876, 6913)]