21791110

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{271}}^1$

素因数の和:349

約数の個数: 64

約数和(自身を含む): 46531584

約数和(自身を除く): 24740474

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 43, 55, 85, 86, 110, 170, 187, 215, 271, 374, 430, 473, 542, 731, 935, 946, 1355, 1462, 1870, 2365, 2710, 2981, 3655, 4607, 4730, 5962, 7310, 8041, 9214, 11653, 14905, 16082, 23035, 23306, 29810, 40205, 46070, 50677, 58265, 80410, 101354, 116530, 128183, 198101, 253385, 256366, 396202, 506770, 640915, 990505, 1281830, 1981010, 2179111, 4358222, 10895555, 21791110]

約数ペア:

[(1, 21791110), (2, 10895555), (5, 4358222), (10, 2179111), (11, 1981010), (17, 1281830), (22, 990505), (34, 640915), (43, 506770), (55, 396202), (85, 256366), (86, 253385), (110, 198101), (170, 128183), (187, 116530), (215, 101354), (271, 80410), (374, 58265), (430, 50677), (473, 46070), (542, 40205), (731, 29810), (935, 23306), (946, 23035), (1355, 16082), (1462, 14905), (1870, 11653), (2365, 9214), (2710, 8041), (2981, 7310), (3655, 5962), (4607, 4730)]