18955940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{23117}}^1$

素因数の和:23167

約数の個数: 24

約数和(自身を含む): 40780152

約数和(自身を除く): 21824212

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 23117, 46234, 92468, 115585, 231170, 462340, 947797, 1895594, 3791188, 4738985, 9477970, 18955940]

約数ペア:

[(1, 18955940), (2, 9477970), (4, 4738985), (5, 3791188), (10, 1895594), (20, 947797), (41, 462340), (82, 231170), (164, 115585), (205, 92468), (410, 46234), (820, 23117)]