81439325

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{233}}^1$

素因数の和:326

約数の個数: 48

約数和(自身を含む): 116992512

約数和(自身を除く): 35553187

約数列:

[1, 5, 11, 25, 31, 41, 55, 155, 205, 233, 275, 341, 451, 775, 1025, 1165, 1271, 1705, 2255, 2563, 5825, 6355, 7223, 8525, 9553, 11275, 12815, 13981, 31775, 36115, 47765, 64075, 69905, 79453, 105083, 180575, 238825, 296143, 349525, 397265, 525415, 1480715, 1986325, 2627075, 3257573, 7403575, 16287865, 81439325]

約数ペア:

[(1, 81439325), (5, 16287865), (11, 7403575), (25, 3257573), (31, 2627075), (41, 1986325), (55, 1480715), (155, 525415), (205, 397265), (233, 349525), (275, 296143), (341, 238825), (451, 180575), (775, 105083), (1025, 79453), (1165, 69905), (1271, 64075), (1705, 47765), (2255, 36115), (2563, 31775), (5825, 13981), (6355, 12815), (7223, 11275), (8525, 9553)]