21382929

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{409}}^1$

素因数の和:609

約数の個数: 24

約数和(自身を含む): 32001320

約数和(自身を除く): 10618391

約数列:

[1, 3, 9, 37, 111, 157, 333, 409, 471, 1227, 1413, 3681, 5809, 15133, 17427, 45399, 52281, 64213, 136197, 192639, 577917, 2375881, 7127643, 21382929]

約数ペア:

[(1, 21382929), (3, 7127643), (9, 2375881), (37, 577917), (111, 192639), (157, 136197), (333, 64213), (409, 52281), (471, 45399), (1227, 17427), (1413, 15133), (3681, 5809)]