20491289

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{2713}}^1$

素因数の和:2816

約数の個数: 16

約数和(自身を含む): 25533312

約数和(自身を除く): 5042023

約数列:

[1, 7, 13, 83, 91, 581, 1079, 2713, 7553, 18991, 35269, 225179, 246883, 1576253, 2927327, 20491289]

約数ペア:

[(1, 20491289), (7, 2927327), (13, 1576253), (83, 246883), (91, 225179), (581, 35269), (1079, 18991), (2713, 7553)]