28678575

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{271}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 50996736

約数和(自身を除く): 22318161

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 83, 85, 249, 255, 271, 415, 425, 813, 1245, 1275, 1355, 1411, 2075, 4065, 4233, 4607, 6225, 6775, 7055, 13821, 20325, 21165, 22493, 23035, 35275, 67479, 69105, 105825, 112465, 115175, 337395, 345525, 382381, 562325, 1147143, 1686975, 1911905, 5735715, 9559525, 28678575]

約数ペア:

[(1, 28678575), (3, 9559525), (5, 5735715), (15, 1911905), (17, 1686975), (25, 1147143), (51, 562325), (75, 382381), (83, 345525), (85, 337395), (249, 115175), (255, 112465), (271, 105825), (415, 69105), (425, 67479), (813, 35275), (1245, 23035), (1275, 22493), (1355, 21165), (1411, 20325), (2075, 13821), (4065, 7055), (4233, 6775), (4607, 6225)]