20975475

素因数分解:

$3^1\times 5^2\times {\mathrm{149}}^1\times {\mathrm{1877}}^1$

素因数の和:2039

約数の個数: 24

約数和(自身を含む): 34930800

約数和(自身を除く): 13955325

約数列:

[1, 3, 5, 15, 25, 75, 149, 447, 745, 1877, 2235, 3725, 5631, 9385, 11175, 28155, 46925, 140775, 279673, 839019, 1398365, 4195095, 6991825, 20975475]

約数ペア:

[(1, 20975475), (3, 6991825), (5, 4195095), (15, 1398365), (25, 839019), (75, 279673), (149, 140775), (447, 46925), (745, 28155), (1877, 11175), (2235, 9385), (3725, 5631)]