21753256

素因数分解:

$2^3\times 7^2\times {\mathrm{211}}^1\times {\mathrm{263}}^1$

素因数の和:494

約数の個数: 48

約数和(自身を含む): 47852640

約数和(自身を除く): 26099384

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 211, 263, 392, 422, 526, 844, 1052, 1477, 1688, 1841, 2104, 2954, 3682, 5908, 7364, 10339, 11816, 12887, 14728, 20678, 25774, 41356, 51548, 55493, 82712, 103096, 110986, 221972, 388451, 443944, 776902, 1553804, 2719157, 3107608, 5438314, 10876628, 21753256]

約数ペア:

[(1, 21753256), (2, 10876628), (4, 5438314), (7, 3107608), (8, 2719157), (14, 1553804), (28, 776902), (49, 443944), (56, 388451), (98, 221972), (196, 110986), (211, 103096), (263, 82712), (392, 55493), (422, 51548), (526, 41356), (844, 25774), (1052, 20678), (1477, 14728), (1688, 12887), (1841, 11816), (2104, 10339), (2954, 7364), (3682, 5908)]