9720890

素因数分解:

$2^1\times 5^1\times {\mathrm{421}}^1\times {\mathrm{2309}}^1$

素因数の和:2737

約数の個数: 16

約数和(自身を含む): 17546760

約数和(自身を除く): 7825870

約数列:

[1, 2, 5, 10, 421, 842, 2105, 2309, 4210, 4618, 11545, 23090, 972089, 1944178, 4860445, 9720890]

約数ペア:

[(1, 9720890), (2, 4860445), (5, 1944178), (10, 972089), (421, 23090), (842, 11545), (2105, 4618), (2309, 4210)]