261455868

素因数分解:

$2^2\times 3^2\times {\mathrm{157}}^1\times {\mathrm{167}}^1\times {\mathrm{277}}^1$

素因数の和:611

約数の個数: 72

約数和(自身を含む): 671510112

約数和(自身を除く): 410054244

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 157, 167, 277, 314, 334, 471, 501, 554, 628, 668, 831, 942, 1002, 1108, 1413, 1503, 1662, 1884, 2004, 2493, 2826, 3006, 3324, 4986, 5652, 6012, 9972, 26219, 43489, 46259, 52438, 78657, 86978, 92518, 104876, 130467, 138777, 157314, 173956, 185036, 235971, 260934, 277554, 314628, 391401, 416331, 471942, 521868, 555108, 782802, 832662, 943884, 1565604, 1665324, 7262663, 14525326, 21787989, 29050652, 43575978, 65363967, 87151956, 130727934, 261455868]

約数ペア:

[(1, 261455868), (2, 130727934), (3, 87151956), (4, 65363967), (6, 43575978), (9, 29050652), (12, 21787989), (18, 14525326), (36, 7262663), (157, 1665324), (167, 1565604), (277, 943884), (314, 832662), (334, 782802), (471, 555108), (501, 521868), (554, 471942), (628, 416331), (668, 391401), (831, 314628), (942, 277554), (1002, 260934), (1108, 235971), (1413, 185036), (1503, 173956), (1662, 157314), (1884, 138777), (2004, 130467), (2493, 104876), (2826, 92518), (3006, 86978), (3324, 78657), (4986, 52438), (5652, 46259), (6012, 43489), (9972, 26219)]