20967705

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42359}}^1$

素因数の和:42381

約数の個数: 24

約数和(自身を含む): 39648960

約数和(自身を除く): 18681255

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 42359, 127077, 211795, 381231, 465949, 635385, 1397847, 1906155, 2329745, 4193541, 6989235, 20967705]

約数ペア:

[(1, 20967705), (3, 6989235), (5, 4193541), (9, 2329745), (11, 1906155), (15, 1397847), (33, 635385), (45, 465949), (55, 381231), (99, 211795), (165, 127077), (495, 42359)]