72820055

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{2591}}^1$

素因数の和:2687

約数の個数: 32

約数和(自身を含む): 110481408

約数和(自身を除く): 37661353

約数列:

[1, 5, 7, 11, 35, 55, 73, 77, 365, 385, 511, 803, 2555, 2591, 4015, 5621, 12955, 18137, 28105, 28501, 90685, 142505, 189143, 199507, 945715, 997535, 1324001, 2080573, 6620005, 10402865, 14564011, 72820055]

約数ペア:

[(1, 72820055), (5, 14564011), (7, 10402865), (11, 6620005), (35, 2080573), (55, 1324001), (73, 997535), (77, 945715), (365, 199507), (385, 189143), (511, 142505), (803, 90685), (2555, 28501), (2591, 28105), (4015, 18137), (5621, 12955)]