20785428

素因数分解:

$2^2\times 3^2\times {\mathrm{109}}^1\times {\mathrm{5297}}^1$

素因数の和:5416

約数の個数: 36

約数和(自身を含む): 53032980

約数和(自身を除く): 32247552

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 109, 218, 327, 436, 654, 981, 1308, 1962, 3924, 5297, 10594, 15891, 21188, 31782, 47673, 63564, 95346, 190692, 577373, 1154746, 1732119, 2309492, 3464238, 5196357, 6928476, 10392714, 20785428]

約数ペア:

[(1, 20785428), (2, 10392714), (3, 6928476), (4, 5196357), (6, 3464238), (9, 2309492), (12, 1732119), (18, 1154746), (36, 577373), (109, 190692), (218, 95346), (327, 63564), (436, 47673), (654, 31782), (981, 21188), (1308, 15891), (1962, 10594), (3924, 5297)]