18892820

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{7211}}^1$

素因数の和:7351

約数の個数: 24

約数和(自身を含む): 39983328

約数和(自身を除く): 21090508

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 7211, 14422, 28844, 36055, 72110, 144220, 944641, 1889282, 3778564, 4723205, 9446410, 18892820]

約数ペア:

[(1, 18892820), (2, 9446410), (4, 4723205), (5, 3778564), (10, 1889282), (20, 944641), (131, 144220), (262, 72110), (524, 36055), (655, 28844), (1310, 14422), (2620, 7211)]