20054920

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3607}}^1$

素因数の和:3757

約数の個数: 32

約数和(自身を含む): 45460800

約数和(自身を除く): 25405880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 3607, 5560, 7214, 14428, 18035, 28856, 36070, 72140, 144280, 501373, 1002746, 2005492, 2506865, 4010984, 5013730, 10027460, 20054920]

約数ペア:

[(1, 20054920), (2, 10027460), (4, 5013730), (5, 4010984), (8, 2506865), (10, 2005492), (20, 1002746), (40, 501373), (139, 144280), (278, 72140), (556, 36070), (695, 28856), (1112, 18035), (1390, 14428), (2780, 7214), (3607, 5560)]