21303758

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{257}}^1$

素因数の和:488

約数の個数: 32

約数和(自身を含む): 38043648

約数和(自身を除く): 16739890

約数列:

[1, 2, 7, 14, 31, 62, 191, 217, 257, 382, 434, 514, 1337, 1799, 2674, 3598, 5921, 7967, 11842, 15934, 41447, 49087, 55769, 82894, 98174, 111538, 343609, 687218, 1521697, 3043394, 10651879, 21303758]

約数ペア:

[(1, 21303758), (2, 10651879), (7, 3043394), (14, 1521697), (31, 687218), (62, 343609), (191, 111538), (217, 98174), (257, 82894), (382, 55769), (434, 49087), (514, 41447), (1337, 15934), (1799, 11842), (2674, 7967), (3598, 5921)]