21451856

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{617}}^1$

素因数の和:719

約数の個数: 40

約数和(自身を含む): 43450344

約数和(自身を除く): 21998488

約数列:

[1, 2, 4, 8, 16, 41, 53, 82, 106, 164, 212, 328, 424, 617, 656, 848, 1234, 2173, 2468, 4346, 4936, 8692, 9872, 17384, 25297, 32701, 34768, 50594, 65402, 101188, 130804, 202376, 261608, 404752, 523216, 1340741, 2681482, 5362964, 10725928, 21451856]

約数ペア:

[(1, 21451856), (2, 10725928), (4, 5362964), (8, 2681482), (16, 1340741), (41, 523216), (53, 404752), (82, 261608), (106, 202376), (164, 130804), (212, 101188), (328, 65402), (424, 50594), (617, 34768), (656, 32701), (848, 25297), (1234, 17384), (2173, 9872), (2468, 8692), (4346, 4936)]