20980730

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{20773}}^1$

素因数の和:20881

約数の個数: 16

約数和(自身を含む): 38141064

約数和(自身を除く): 17160334

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 20773, 41546, 103865, 207730, 2098073, 4196146, 10490365, 20980730]

約数ペア:

[(1, 20980730), (2, 10490365), (5, 4196146), (10, 2098073), (101, 207730), (202, 103865), (505, 41546), (1010, 20773)]