261517025

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1861}}^1$

素因数の和:1962

約数の個数: 48

約数和(自身を含む): 410057088

約数和(自身を除く): 148540063

約数列:

[1, 5, 7, 11, 25, 35, 55, 73, 77, 175, 275, 365, 385, 511, 803, 1825, 1861, 1925, 2555, 4015, 5621, 9305, 12775, 13027, 20075, 20471, 28105, 46525, 65135, 102355, 135853, 140525, 143297, 325675, 511775, 679265, 716485, 950971, 1494383, 3396325, 3582425, 4754855, 7471915, 10460681, 23774275, 37359575, 52303405, 261517025]

約数ペア:

[(1, 261517025), (5, 52303405), (7, 37359575), (11, 23774275), (25, 10460681), (35, 7471915), (55, 4754855), (73, 3582425), (77, 3396325), (175, 1494383), (275, 950971), (365, 716485), (385, 679265), (511, 511775), (803, 325675), (1825, 143297), (1861, 140525), (1925, 135853), (2555, 102355), (4015, 65135), (5621, 46525), (9305, 28105), (12775, 20471), (13027, 20075)]