9807820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{409}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 22730400

約数和(自身を除く): 12922580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 109, 110, 218, 220, 409, 436, 545, 818, 1090, 1199, 1636, 2045, 2180, 2398, 4090, 4499, 4796, 5995, 8180, 8998, 11990, 17996, 22495, 23980, 44581, 44990, 89162, 89980, 178324, 222905, 445810, 490391, 891620, 980782, 1961564, 2451955, 4903910, 9807820]

約数ペア:

[(1, 9807820), (2, 4903910), (4, 2451955), (5, 1961564), (10, 980782), (11, 891620), (20, 490391), (22, 445810), (44, 222905), (55, 178324), (109, 89980), (110, 89162), (218, 44990), (220, 44581), (409, 23980), (436, 22495), (545, 17996), (818, 11990), (1090, 8998), (1199, 8180), (1636, 5995), (2045, 4796), (2180, 4499), (2398, 4090)]