21315284

素因数分解:

$2^2\times {\mathrm{59}}^1\times {\mathrm{181}}^1\times {\mathrm{499}}^1$

素因数の和:743

約数の個数: 24

約数和(自身を含む): 38220000

約数和(自身を除く): 16904716

約数列:

[1, 2, 4, 59, 118, 181, 236, 362, 499, 724, 998, 1996, 10679, 21358, 29441, 42716, 58882, 90319, 117764, 180638, 361276, 5328821, 10657642, 21315284]

約数ペア:

[(1, 21315284), (2, 10657642), (4, 5328821), (59, 361276), (118, 180638), (181, 117764), (236, 90319), (362, 58882), (499, 42716), (724, 29441), (998, 21358), (1996, 10679)]