208021820

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{196247}}^1$

素因数の和:196309

約数の個数: 24

約数和(自身を含む): 445090464

約数和(自身を除く): 237068644

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 196247, 392494, 784988, 981235, 1962470, 3924940, 10401091, 20802182, 41604364, 52005455, 104010910, 208021820]

約数ペア:

[(1, 208021820), (2, 104010910), (4, 52005455), (5, 41604364), (10, 20802182), (20, 10401091), (53, 3924940), (106, 1962470), (212, 981235), (265, 784988), (530, 392494), (1060, 196247)]