27986985

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{431}}^1$

素因数の和:495

約数の個数: 64

約数和(自身を含む): 55157760

約数和(自身を除く): 27170775

約数列:

[1, 3, 5, 9, 13, 15, 27, 37, 39, 45, 65, 111, 117, 135, 185, 195, 333, 351, 431, 481, 555, 585, 999, 1293, 1443, 1665, 1755, 2155, 2405, 3879, 4329, 4995, 5603, 6465, 7215, 11637, 12987, 15947, 16809, 19395, 21645, 28015, 47841, 50427, 58185, 64935, 79735, 84045, 143523, 151281, 207311, 239205, 252135, 430569, 621933, 717615, 756405, 1036555, 1865799, 2152845, 3109665, 5597397, 9328995, 27986985]

約数ペア:

[(1, 27986985), (3, 9328995), (5, 5597397), (9, 3109665), (13, 2152845), (15, 1865799), (27, 1036555), (37, 756405), (39, 717615), (45, 621933), (65, 430569), (111, 252135), (117, 239205), (135, 207311), (185, 151281), (195, 143523), (333, 84045), (351, 79735), (431, 64935), (481, 58185), (555, 50427), (585, 47841), (999, 28015), (1293, 21645), (1443, 19395), (1665, 16809), (1755, 15947), (2155, 12987), (2405, 11637), (3879, 7215), (4329, 6465), (4995, 5603)]