21725165

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{773}}^1$

素因数の和:869

約数の個数: 32

約数和(自身を含む): 32990976

約数和(自身を除く): 11265811

約数列:

[1, 5, 7, 11, 35, 55, 73, 77, 365, 385, 511, 773, 803, 2555, 3865, 4015, 5411, 5621, 8503, 27055, 28105, 42515, 56429, 59521, 282145, 297605, 395003, 620719, 1975015, 3103595, 4345033, 21725165]

約数ペア:

[(1, 21725165), (5, 4345033), (7, 3103595), (11, 1975015), (35, 620719), (55, 395003), (73, 297605), (77, 282145), (365, 59521), (385, 56429), (511, 42515), (773, 28105), (803, 27055), (2555, 8503), (3865, 5621), (4015, 5411)]