18821075

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8273}}^1$

素因数の和:8303

約数の個数: 24

約数和(自身を含む): 28727328

約数和(自身を除く): 9906253

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 175, 325, 455, 2275, 8273, 41365, 57911, 107549, 206825, 289555, 537745, 752843, 1447775, 2688725, 3764215, 18821075]

約数ペア:

[(1, 18821075), (5, 3764215), (7, 2688725), (13, 1447775), (25, 752843), (35, 537745), (65, 289555), (91, 206825), (175, 107549), (325, 57911), (455, 41365), (2275, 8273)]