64212440

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{11549}}^1$

素因数の和:11699

約数の個数: 32

約数和(自身を含む): 145530000

約数和(自身を除く): 81317560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 11549, 23098, 46196, 57745, 92392, 115490, 230980, 461960, 1605311, 3210622, 6421244, 8026555, 12842488, 16053110, 32106220, 64212440]

約数ペア:

[(1, 64212440), (2, 32106220), (4, 16053110), (5, 12842488), (8, 8026555), (10, 6421244), (20, 3210622), (40, 1605311), (139, 461960), (278, 230980), (556, 115490), (695, 92392), (1112, 57745), (1390, 46196), (2780, 23098), (5560, 11549)]