20777570

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{271}}^1$

素因数の和:347

約数の個数: 64

約数和(自身を含む): 44416512

約数和(自身を除く): 23638942

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 41, 55, 82, 85, 110, 170, 187, 205, 271, 374, 410, 451, 542, 697, 902, 935, 1355, 1394, 1870, 2255, 2710, 2981, 3485, 4510, 4607, 5962, 6970, 7667, 9214, 11111, 14905, 15334, 22222, 23035, 29810, 38335, 46070, 50677, 55555, 76670, 101354, 111110, 122221, 188887, 244442, 253385, 377774, 506770, 611105, 944435, 1222210, 1888870, 2077757, 4155514, 10388785, 20777570]

約数ペア:

[(1, 20777570), (2, 10388785), (5, 4155514), (10, 2077757), (11, 1888870), (17, 1222210), (22, 944435), (34, 611105), (41, 506770), (55, 377774), (82, 253385), (85, 244442), (110, 188887), (170, 122221), (187, 111110), (205, 101354), (271, 76670), (374, 55555), (410, 50677), (451, 46070), (542, 38335), (697, 29810), (902, 23035), (935, 22222), (1355, 15334), (1394, 14905), (1870, 11111), (2255, 9214), (2710, 7667), (2981, 6970), (3485, 5962), (4510, 4607)]