90901000

素因数分解:

$2^3\times 5^3\times {\mathrm{90901}}^1$

素因数の和:90922

約数の個数: 32

約数和(自身を含む): 212710680

約数和(自身を除く): 121809680

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 90901, 181802, 363604, 454505, 727208, 909010, 1818020, 2272525, 3636040, 4545050, 9090100, 11362625, 18180200, 22725250, 45450500, 90901000]

約数ペア:

[(1, 90901000), (2, 45450500), (4, 22725250), (5, 18180200), (8, 11362625), (10, 9090100), (20, 4545050), (25, 3636040), (40, 2272525), (50, 1818020), (100, 909010), (125, 727208), (200, 454505), (250, 363604), (500, 181802), (1000, 90901)]