12875900

素因数分解:

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

素因数の和:734

約数の個数: 36

約数和(自身を含む): 28097160

約数和(自身を除く): 15221260

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 331, 389, 662, 778, 1324, 1556, 1655, 1945, 3310, 3890, 6620, 7780, 8275, 9725, 16550, 19450, 33100, 38900, 128759, 257518, 515036, 643795, 1287590, 2575180, 3218975, 6437950, 12875900]

約数ペア:

[(1, 12875900), (2, 6437950), (4, 3218975), (5, 2575180), (10, 1287590), (20, 643795), (25, 515036), (50, 257518), (100, 128759), (331, 38900), (389, 33100), (662, 19450), (778, 16550), (1324, 9725), (1556, 8275), (1655, 7780), (1945, 6620), (3310, 3890)]