257428304

素因数分解:

$2^4\times 7^1\times {\mathrm{107}}^1\times {\mathrm{21481}}^1$

素因数の和:21603

約数の個数: 40

約数和(自身を含む): 575373888

約数和(自身を除く): 317945584

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 107, 112, 214, 428, 749, 856, 1498, 1712, 2996, 5992, 11984, 21481, 42962, 85924, 150367, 171848, 300734, 343696, 601468, 1202936, 2298467, 2405872, 4596934, 9193868, 16089269, 18387736, 32178538, 36775472, 64357076, 128714152, 257428304]

約数ペア:

[(1, 257428304), (2, 128714152), (4, 64357076), (7, 36775472), (8, 32178538), (14, 18387736), (16, 16089269), (28, 9193868), (56, 4596934), (107, 2405872), (112, 2298467), (214, 1202936), (428, 601468), (749, 343696), (856, 300734), (1498, 171848), (1712, 150367), (2996, 85924), (5992, 42962), (11984, 21481)]