21203787

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{1571}}^1$

素因数の和:1994

約数の個数: 16

約数和(自身を含む): 30936960

約数和(自身を除く): 9733173

約数列:

[1, 3, 11, 33, 409, 1227, 1571, 4499, 4713, 13497, 17281, 51843, 642539, 1927617, 7067929, 21203787]

約数ペア:

[(1, 21203787), (3, 7067929), (11, 1927617), (33, 642539), (409, 51843), (1227, 17281), (1571, 13497), (4499, 4713)]