19099900

素因数分解:

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

素因数の和:894

約数の個数: 36

約数和(自身を含む): 41637960

約数和(自身を除く): 22538060

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 389, 491, 778, 982, 1556, 1945, 1964, 2455, 3890, 4910, 7780, 9725, 9820, 12275, 19450, 24550, 38900, 49100, 190999, 381998, 763996, 954995, 1909990, 3819980, 4774975, 9549950, 19099900]

約数ペア:

[(1, 19099900), (2, 9549950), (4, 4774975), (5, 3819980), (10, 1909990), (20, 954995), (25, 763996), (50, 381998), (100, 190999), (389, 49100), (491, 38900), (778, 24550), (982, 19450), (1556, 12275), (1945, 9820), (1964, 9725), (2455, 7780), (3890, 4910)]