3819980

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{491}}^1$

素因数の和:889

約数の個数: 24

約数和(自身を含む): 8058960

約数和(自身を除く): 4238980

約数列:

[1, 2, 4, 5, 10, 20, 389, 491, 778, 982, 1556, 1945, 1964, 2455, 3890, 4910, 7780, 9820, 190999, 381998, 763996, 954995, 1909990, 3819980]

約数ペア:

[(1, 3819980), (2, 1909990), (4, 954995), (5, 763996), (10, 381998), (20, 190999), (389, 9820), (491, 7780), (778, 4910), (982, 3890), (1556, 2455), (1945, 1964)]