257430340

素因数分解:

$2^2\times 5^1\times {\mathrm{2339}}^1\times {\mathrm{5503}}^1$

素因数の和:7851

約数の個数: 24

約数和(自身を含む): 540933120

約数和(自身を除く): 283502780

約数列:

[1, 2, 4, 5, 10, 20, 2339, 4678, 5503, 9356, 11006, 11695, 22012, 23390, 27515, 46780, 55030, 110060, 12871517, 25743034, 51486068, 64357585, 128715170, 257430340]

約数ペア:

[(1, 257430340), (2, 128715170), (4, 64357585), (5, 51486068), (10, 25743034), (20, 12871517), (2339, 110060), (4678, 55030), (5503, 46780), (9356, 27515), (11006, 23390), (11695, 22012)]