21038996

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{2557}}^1$

素因数の和:2600

約数の個数: 36

約数和(自身を含む): 42866964

約数和(自身を除く): 21827968

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 68, 121, 187, 242, 374, 484, 748, 2057, 2557, 4114, 5114, 8228, 10228, 28127, 43469, 56254, 86938, 112508, 173876, 309397, 478159, 618794, 956318, 1237588, 1912636, 5259749, 10519498, 21038996]

約数ペア:

[(1, 21038996), (2, 10519498), (4, 5259749), (11, 1912636), (17, 1237588), (22, 956318), (34, 618794), (44, 478159), (68, 309397), (121, 173876), (187, 112508), (242, 86938), (374, 56254), (484, 43469), (748, 28127), (2057, 10228), (2557, 8228), (4114, 5114)]