21813987

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{18043}}^1$

素因数の和:18090

約数の個数: 16

約数和(自身を含む): 32334848

約数和(自身を除く): 10520861

約数列:

[1, 3, 13, 31, 39, 93, 403, 1209, 18043, 54129, 234559, 559333, 703677, 1677999, 7271329, 21813987]

約数ペア:

[(1, 21813987), (3, 7271329), (13, 1677999), (31, 703677), (39, 559333), (93, 234559), (403, 54129), (1209, 18043)]