20145080

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6899}}^1$

素因数の和:6983

約数の個数: 32

約数和(自身を含む): 45954000

約数和(自身を除く): 25808920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 6899, 13798, 27596, 34495, 55192, 68990, 137980, 275960, 503627, 1007254, 2014508, 2518135, 4029016, 5036270, 10072540, 20145080]

約数ペア:

[(1, 20145080), (2, 10072540), (4, 5036270), (5, 4029016), (8, 2518135), (10, 2014508), (20, 1007254), (40, 503627), (73, 275960), (146, 137980), (292, 68990), (365, 55192), (584, 34495), (730, 27596), (1460, 13798), (2920, 6899)]