20842740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{115793}}^1$

素因数の和:115808

約数の個数: 36

約数和(自身を含む): 63223524

約数和(自身を除く): 42380784

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 115793, 231586, 347379, 463172, 578965, 694758, 1042137, 1157930, 1389516, 1736895, 2084274, 2315860, 3473790, 4168548, 5210685, 6947580, 10421370, 20842740]

約数ペア:

[(1, 20842740), (2, 10421370), (3, 6947580), (4, 5210685), (5, 4168548), (6, 3473790), (9, 2315860), (10, 2084274), (12, 1736895), (15, 1389516), (18, 1157930), (20, 1042137), (30, 694758), (36, 578965), (45, 463172), (60, 347379), (90, 231586), (180, 115793)]