28220775

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{433}}^1$

素因数の和:536

約数の個数: 48

約数和(自身を含む): 51663360

約数和(自身を除く): 23442585

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 79, 165, 237, 275, 395, 433, 825, 869, 1185, 1299, 1975, 2165, 2607, 4345, 4763, 5925, 6495, 10825, 13035, 14289, 21725, 23815, 32475, 34207, 65175, 71445, 102621, 119075, 171035, 357225, 376277, 513105, 855175, 1128831, 1881385, 2565525, 5644155, 9406925, 28220775]

約数ペア:

[(1, 28220775), (3, 9406925), (5, 5644155), (11, 2565525), (15, 1881385), (25, 1128831), (33, 855175), (55, 513105), (75, 376277), (79, 357225), (165, 171035), (237, 119075), (275, 102621), (395, 71445), (433, 65175), (825, 34207), (869, 32475), (1185, 23815), (1299, 21725), (1975, 14289), (2165, 13035), (2607, 10825), (4345, 6495), (4763, 5925)]