218368540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{839879}}^1$

素因数の和:839901

約数の個数: 24

約数和(自身を含む): 493849440

約数和(自身を除く): 275480900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 839879, 1679758, 3359516, 4199395, 8398790, 10918427, 16797580, 21836854, 43673708, 54592135, 109184270, 218368540]

約数ペア:

[(1, 218368540), (2, 109184270), (4, 54592135), (5, 43673708), (10, 21836854), (13, 16797580), (20, 10918427), (26, 8398790), (52, 4199395), (65, 3359516), (130, 1679758), (260, 839879)]