128857904

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{409}}^1$

素因数の和:550

約数の個数: 80

約数和(自身を含む): 298939200

約数和(自身を除く): 170081296

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 56, 58, 97, 112, 116, 194, 203, 232, 388, 406, 409, 464, 679, 776, 812, 818, 1358, 1552, 1624, 1636, 2716, 2813, 2863, 3248, 3272, 5432, 5626, 5726, 6544, 10864, 11252, 11452, 11861, 19691, 22504, 22904, 23722, 39382, 39673, 45008, 45808, 47444, 78764, 79346, 83027, 94888, 157528, 158692, 166054, 189776, 277711, 315056, 317384, 332108, 555422, 634768, 664216, 1110844, 1150517, 1328432, 2221688, 2301034, 4443376, 4602068, 8053619, 9204136, 16107238, 18408272, 32214476, 64428952, 128857904]

約数ペア:

[(1, 128857904), (2, 64428952), (4, 32214476), (7, 18408272), (8, 16107238), (14, 9204136), (16, 8053619), (28, 4602068), (29, 4443376), (56, 2301034), (58, 2221688), (97, 1328432), (112, 1150517), (116, 1110844), (194, 664216), (203, 634768), (232, 555422), (388, 332108), (406, 317384), (409, 315056), (464, 277711), (679, 189776), (776, 166054), (812, 158692), (818, 157528), (1358, 94888), (1552, 83027), (1624, 79346), (1636, 78764), (2716, 47444), (2813, 45808), (2863, 45008), (3248, 39673), (3272, 39382), (5432, 23722), (5626, 22904), (5726, 22504), (6544, 19691), (10864, 11861), (11252, 11452)]