51815140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199289}}^1$

素因数の和:199311

約数の個数: 24

約数和(自身を含む): 117182520

約数和(自身を除く): 65367380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 199289, 398578, 797156, 996445, 1992890, 2590757, 3985780, 5181514, 10363028, 12953785, 25907570, 51815140]

約数ペア:

[(1, 51815140), (2, 25907570), (4, 12953785), (5, 10363028), (10, 5181514), (13, 3985780), (20, 2590757), (26, 1992890), (52, 996445), (65, 797156), (130, 398578), (260, 199289)]