21009285

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42443}}^1$

素因数の和:42465

約数の個数: 24

約数和(自身を含む): 39727584

約数和(自身を除く): 18718299

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 42443, 127329, 212215, 381987, 466873, 636645, 1400619, 1909935, 2334365, 4201857, 7003095, 21009285]

約数ペア:

[(1, 21009285), (3, 7003095), (5, 4201857), (9, 2334365), (11, 1909935), (15, 1400619), (33, 636645), (45, 466873), (55, 381987), (99, 212215), (165, 127329), (495, 42443)]