20615012

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{191}}^1\times {\mathrm{223}}^1$

素因数の和:440

約数の個数: 36

約数和(自身を含む): 40040448

約数和(自身を除く): 19425436

約数列:

[1, 2, 4, 11, 22, 44, 121, 191, 223, 242, 382, 446, 484, 764, 892, 2101, 2453, 4202, 4906, 8404, 9812, 23111, 26983, 42593, 46222, 53966, 85186, 92444, 107932, 170372, 468523, 937046, 1874092, 5153753, 10307506, 20615012]

約数ペア:

[(1, 20615012), (2, 10307506), (4, 5153753), (11, 1874092), (22, 937046), (44, 468523), (121, 170372), (191, 107932), (223, 92444), (242, 85186), (382, 53966), (446, 46222), (484, 42593), (764, 26983), (892, 23111), (2101, 9812), (2453, 8404), (4202, 4906)]