218121340

素因数分解:

$2^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{40543}}^1$

素因数の和:40821

約数の個数: 24

約数和(自身を含む): 459768960

約数和(自身を除く): 241647620

約数列:

[1, 2, 4, 5, 10, 20, 269, 538, 1076, 1345, 2690, 5380, 40543, 81086, 162172, 202715, 405430, 810860, 10906067, 21812134, 43624268, 54530335, 109060670, 218121340]

約数ペア:

[(1, 218121340), (2, 109060670), (4, 54530335), (5, 43624268), (10, 21812134), (20, 10906067), (269, 810860), (538, 405430), (1076, 202715), (1345, 162172), (2690, 81086), (5380, 40543)]