28245495

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:220

約数の個数: 64

約数和(自身を含む): 51609600

約数和(自身を除く): 23364105

約数列:

[1, 3, 5, 15, 19, 23, 31, 57, 69, 93, 95, 115, 139, 155, 285, 345, 417, 437, 465, 589, 695, 713, 1311, 1767, 2085, 2139, 2185, 2641, 2945, 3197, 3565, 4309, 6555, 7923, 8835, 9591, 10695, 12927, 13205, 13547, 15985, 21545, 39615, 40641, 47955, 60743, 64635, 67735, 81871, 99107, 182229, 203205, 245613, 297321, 303715, 409355, 495535, 911145, 1228065, 1486605, 1883033, 5649099, 9415165, 28245495]

約数ペア:

[(1, 28245495), (3, 9415165), (5, 5649099), (15, 1883033), (19, 1486605), (23, 1228065), (31, 911145), (57, 495535), (69, 409355), (93, 303715), (95, 297321), (115, 245613), (139, 203205), (155, 182229), (285, 99107), (345, 81871), (417, 67735), (437, 64635), (465, 60743), (589, 47955), (695, 40641), (713, 39615), (1311, 21545), (1767, 15985), (2085, 13547), (2139, 13205), (2185, 12927), (2641, 10695), (2945, 9591), (3197, 8835), (3565, 7923), (4309, 6555)]