21000388605

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{773}}^1\times {\mathrm{258737}}^1$

素因数の和:259525

約数の個数: 32

約数和(自身を含む): 38450536704

約数和(自身を除く): 17450148099

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 773, 2319, 3865, 5411, 11595, 16233, 27055, 81165, 258737, 776211, 1293685, 1811159, 3881055, 5433477, 9055795, 27167385, 200003701, 600011103, 1000018505, 1400025907, 3000055515, 4200077721, 7000129535, 21000388605]

約数ペア:

[(1, 21000388605), (3, 7000129535), (5, 4200077721), (7, 3000055515), (15, 1400025907), (21, 1000018505), (35, 600011103), (105, 200003701), (773, 27167385), (2319, 9055795), (3865, 5433477), (5411, 3881055), (11595, 1811159), (16233, 1293685), (27055, 776211), (81165, 258737)]