9921620

素因数分解:

$2^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{1151}}^1$

素因数の和:1591

約数の個数: 24

約数和(自身を含む): 20901888

約数和(自身を除く): 10980268

約数列:

[1, 2, 4, 5, 10, 20, 431, 862, 1151, 1724, 2155, 2302, 4310, 4604, 5755, 8620, 11510, 23020, 496081, 992162, 1984324, 2480405, 4960810, 9921620]

約数ペア:

[(1, 9921620), (2, 4960810), (4, 2480405), (5, 1984324), (10, 992162), (20, 496081), (431, 23020), (862, 11510), (1151, 8620), (1724, 5755), (2155, 4604), (2302, 4310)]