28255275

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:205

約数の個数: 72

約数和(自身を含む): 54840240

約数和(自身を除く): 26584965

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 83, 85, 89, 153, 225, 249, 255, 267, 415, 425, 445, 747, 765, 801, 1245, 1275, 1335, 1411, 1513, 2075, 2225, 3735, 3825, 4005, 4233, 4539, 6225, 6675, 7055, 7387, 7565, 12699, 13617, 18675, 20025, 21165, 22161, 22695, 35275, 36935, 37825, 63495, 66483, 68085, 105825, 110805, 113475, 125579, 184675, 317475, 332415, 340425, 376737, 554025, 627895, 1130211, 1662075, 1883685, 3139475, 5651055, 9418425, 28255275]

約数ペア:

[(1, 28255275), (3, 9418425), (5, 5651055), (9, 3139475), (15, 1883685), (17, 1662075), (25, 1130211), (45, 627895), (51, 554025), (75, 376737), (83, 340425), (85, 332415), (89, 317475), (153, 184675), (225, 125579), (249, 113475), (255, 110805), (267, 105825), (415, 68085), (425, 66483), (445, 63495), (747, 37825), (765, 36935), (801, 35275), (1245, 22695), (1275, 22161), (1335, 21165), (1411, 20025), (1513, 18675), (2075, 13617), (2225, 12699), (3735, 7565), (3825, 7387), (4005, 7055), (4233, 6675), (4539, 6225)]