20402295

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4211}}^1$

素因数の和:4255

約数の個数: 32

約数和(自身を含む): 36391680

約数和(自身を除く): 15989385

約数列:

[1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615, 4211, 4845, 12633, 21055, 63165, 71587, 80009, 214761, 240027, 357935, 400045, 1073805, 1200135, 1360153, 4080459, 6800765, 20402295]

約数ペア:

[(1, 20402295), (3, 6800765), (5, 4080459), (15, 1360153), (17, 1200135), (19, 1073805), (51, 400045), (57, 357935), (85, 240027), (95, 214761), (255, 80009), (285, 71587), (323, 63165), (969, 21055), (1615, 12633), (4211, 4845)]