17938220

素因数分解:

$2^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{2081}}^1$

素因数の和:2521

約数の個数: 24

約数和(自身を含む): 37775808

約数和(自身を除く): 19837588

約数列:

[1, 2, 4, 5, 10, 20, 431, 862, 1724, 2081, 2155, 4162, 4310, 8324, 8620, 10405, 20810, 41620, 896911, 1793822, 3587644, 4484555, 8969110, 17938220]

約数ペア:

[(1, 17938220), (2, 8969110), (4, 4484555), (5, 3587644), (10, 1793822), (20, 896911), (431, 41620), (862, 20810), (1724, 10405), (2081, 8620), (2155, 8324), (4162, 4310)]