28905255

素因数分解:

$3^4\times 5^1\times {\mathrm{149}}^1\times {\mathrm{479}}^1$

素因数の和:645

約数の個数: 40

約数和(自身を含む): 52272000

約数和(自身を除く): 23366745

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 149, 405, 447, 479, 745, 1341, 1437, 2235, 2395, 4023, 4311, 6705, 7185, 12069, 12933, 20115, 21555, 38799, 60345, 64665, 71371, 193995, 214113, 356855, 642339, 1070565, 1927017, 3211695, 5781051, 9635085, 28905255]

約数ペア:

[(1, 28905255), (3, 9635085), (5, 5781051), (9, 3211695), (15, 1927017), (27, 1070565), (45, 642339), (81, 356855), (135, 214113), (149, 193995), (405, 71371), (447, 64665), (479, 60345), (745, 38799), (1341, 21555), (1437, 20115), (2235, 12933), (2395, 12069), (4023, 7185), (4311, 6705)]