80650520

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{19963}}^1$

素因数の和:20075

約数の個数: 32

約数和(自身を含む): 183269520

約数和(自身を除く): 102619000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 19963, 39926, 79852, 99815, 159704, 199630, 399260, 798520, 2016263, 4032526, 8065052, 10081315, 16130104, 20162630, 40325260, 80650520]

約数ペア:

[(1, 80650520), (2, 40325260), (4, 20162630), (5, 16130104), (8, 10081315), (10, 8065052), (20, 4032526), (40, 2016263), (101, 798520), (202, 399260), (404, 199630), (505, 159704), (808, 99815), (1010, 79852), (2020, 39926), (4040, 19963)]