21972885

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{133169}}^1$

素因数の和:133188

約数の個数: 16

約数和(自身を含む): 38352960

約数和(自身を除く): 16380075

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 133169, 399507, 665845, 1464859, 1997535, 4394577, 7324295, 21972885]

約数ペア:

[(1, 21972885), (3, 7324295), (5, 4394577), (11, 1997535), (15, 1464859), (33, 665845), (55, 399507), (165, 133169)]