20420552

素因数分解:

$2^3\times {\mathrm{79}}^2\times {\mathrm{409}}^1$

素因数の和:573

約数の個数: 24

約数和(自身を含む): 38874150

約数和(自身を除く): 18453598

約数列:

[1, 2, 4, 8, 79, 158, 316, 409, 632, 818, 1636, 3272, 6241, 12482, 24964, 32311, 49928, 64622, 129244, 258488, 2552569, 5105138, 10210276, 20420552]

約数ペア:

[(1, 20420552), (2, 10210276), (4, 5105138), (8, 2552569), (79, 258488), (158, 129244), (316, 64622), (409, 49928), (632, 32311), (818, 24964), (1636, 12482), (3272, 6241)]