256821796

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{28753}}^1$

素因数の和:28804

約数の個数: 48

約数和(自身を含む): 579680640

約数和(自身を除く): 322858844

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 29, 44, 58, 77, 116, 154, 203, 308, 319, 406, 638, 812, 1276, 2233, 4466, 8932, 28753, 57506, 115012, 201271, 316283, 402542, 632566, 805084, 833837, 1265132, 1667674, 2213981, 3335348, 4427962, 5836859, 8855924, 9172207, 11673718, 18344414, 23347436, 36688828, 64205449, 128410898, 256821796]

約数ペア:

[(1, 256821796), (2, 128410898), (4, 64205449), (7, 36688828), (11, 23347436), (14, 18344414), (22, 11673718), (28, 9172207), (29, 8855924), (44, 5836859), (58, 4427962), (77, 3335348), (116, 2213981), (154, 1667674), (203, 1265132), (308, 833837), (319, 805084), (406, 632566), (638, 402542), (812, 316283), (1276, 201271), (2233, 115012), (4466, 57506), (8932, 28753)]