18912475

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{241}}^1$

素因数の和:367

約数の個数: 24

約数和(自身を含む): 24426512

約数和(自身を除く): 5514037

約数列:

[1, 5, 25, 43, 73, 215, 241, 365, 1075, 1205, 1825, 3139, 6025, 10363, 15695, 17593, 51815, 78475, 87965, 259075, 439825, 756499, 3782495, 18912475]

約数ペア:

[(1, 18912475), (5, 3782495), (25, 756499), (43, 439825), (73, 259075), (215, 87965), (241, 78475), (365, 51815), (1075, 17593), (1205, 15695), (1825, 10363), (3139, 6025)]