2575180

素因数分解:

$2^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{389}}^1$

素因数の和:729

約数の個数: 24

約数和(自身を含む): 5438160

約数和(自身を除く): 2862980

約数列:

[1, 2, 4, 5, 10, 20, 331, 389, 662, 778, 1324, 1556, 1655, 1945, 3310, 3890, 6620, 7780, 128759, 257518, 515036, 643795, 1287590, 2575180]

約数ペア:

[(1, 2575180), (2, 1287590), (4, 643795), (5, 515036), (10, 257518), (20, 128759), (331, 7780), (389, 6620), (662, 3890), (778, 3310), (1324, 1945), (1556, 1655)]