19882456

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2237}}^1$

素因数の和:2355

約数の個数: 32

約数和(自身を含む): 41089680

約数和(自身を除く): 21207224

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 101, 202, 404, 808, 1111, 2222, 2237, 4444, 4474, 8888, 8948, 17896, 24607, 49214, 98428, 196856, 225937, 451874, 903748, 1807496, 2485307, 4970614, 9941228, 19882456]

約数ペア:

[(1, 19882456), (2, 9941228), (4, 4970614), (8, 2485307), (11, 1807496), (22, 903748), (44, 451874), (88, 225937), (101, 196856), (202, 98428), (404, 49214), (808, 24607), (1111, 17896), (2222, 8948), (2237, 8888), (4444, 4474)]