18913705

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{1009}}^1$

素因数の和:1200

約数の個数: 16

約数和(自身を含む): 23852160

約数和(自身を除く): 4938455

約数列:

[1, 5, 23, 115, 163, 815, 1009, 3749, 5045, 18745, 23207, 116035, 164467, 822335, 3782741, 18913705]

約数ペア:

[(1, 18913705), (5, 3782741), (23, 822335), (115, 164467), (163, 116035), (815, 23207), (1009, 18745), (3749, 5045)]