21268665

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42967}}^1$

素因数の和:42989

約数の個数: 24

約数和(自身を含む): 40218048

約数和(自身を除く): 18949383

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 42967, 128901, 214835, 386703, 472637, 644505, 1417911, 1933515, 2363185, 4253733, 7089555, 21268665]

約数ペア:

[(1, 21268665), (3, 7089555), (5, 4253733), (9, 2363185), (11, 1933515), (15, 1417911), (33, 644505), (45, 472637), (55, 386703), (99, 214835), (165, 128901), (495, 42967)]