18340940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{22367}}^1$

素因数の和:22417

約数の個数: 24

約数和(自身を含む): 39457152

約数和(自身を除く): 21116212

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 22367, 44734, 89468, 111835, 223670, 447340, 917047, 1834094, 3668188, 4585235, 9170470, 18340940]

約数ペア:

[(1, 18340940), (2, 9170470), (4, 4585235), (5, 3668188), (10, 1834094), (20, 917047), (41, 447340), (82, 223670), (164, 111835), (205, 89468), (410, 44734), (820, 22367)]