20945530

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{123209}}^1$

素因数の和:123233

約数の個数: 16

約数和(自身を含む): 39920040

約数和(自身を除く): 18974510

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 123209, 246418, 616045, 1232090, 2094553, 4189106, 10472765, 20945530]

約数ペア:

[(1, 20945530), (2, 10472765), (5, 4189106), (10, 2094553), (17, 1232090), (34, 616045), (85, 246418), (170, 123209)]