21892820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{35311}}^1$

素因数の和:35351

約数の個数: 24

約数和(自身を含む): 47459328

約数和(自身を除く): 25566508

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 35311, 70622, 141244, 176555, 353110, 706220, 1094641, 2189282, 4378564, 5473205, 10946410, 21892820]

約数ペア:

[(1, 21892820), (2, 10946410), (4, 5473205), (5, 4378564), (10, 2189282), (20, 1094641), (31, 706220), (62, 353110), (124, 176555), (155, 141244), (310, 70622), (620, 35311)]