21110475

素因数分解:

$3^1\times 5^2\times {\mathrm{397}}^1\times {\mathrm{709}}^1$

素因数の和:1119

約数の個数: 24

約数和(自身を含む): 35039920

約数和(自身を除く): 13929445

約数列:

[1, 3, 5, 15, 25, 75, 397, 709, 1191, 1985, 2127, 3545, 5955, 9925, 10635, 17725, 29775, 53175, 281473, 844419, 1407365, 4222095, 7036825, 21110475]

約数ペア:

[(1, 21110475), (3, 7036825), (5, 4222095), (15, 1407365), (25, 844419), (75, 281473), (397, 53175), (709, 29775), (1191, 17725), (1985, 10635), (2127, 9925), (3545, 5955)]