19018900

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{4423}}^1$

素因数の和:4480

約数の個数: 36

約数和(自身を含む): 42240352

約数和(自身を除く): 23221452

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 4423, 8846, 17692, 22115, 44230, 88460, 110575, 190189, 221150, 380378, 442300, 760756, 950945, 1901890, 3803780, 4754725, 9509450, 19018900]

約数ペア:

[(1, 19018900), (2, 9509450), (4, 4754725), (5, 3803780), (10, 1901890), (20, 950945), (25, 760756), (43, 442300), (50, 380378), (86, 221150), (100, 190189), (172, 110575), (215, 88460), (430, 44230), (860, 22115), (1075, 17692), (2150, 8846), (4300, 4423)]