21928940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{379}}^1$

素因数の和:662

約数の個数: 48

約数和(自身を含む): 50561280

約数和(自身を除く): 28632340

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 263, 379, 526, 758, 1052, 1315, 1516, 1895, 2630, 2893, 3790, 4169, 5260, 5786, 7580, 8338, 11572, 14465, 16676, 20845, 28930, 41690, 57860, 83380, 99677, 199354, 398708, 498385, 996770, 1096447, 1993540, 2192894, 4385788, 5482235, 10964470, 21928940]

約数ペア:

[(1, 21928940), (2, 10964470), (4, 5482235), (5, 4385788), (10, 2192894), (11, 1993540), (20, 1096447), (22, 996770), (44, 498385), (55, 398708), (110, 199354), (220, 99677), (263, 83380), (379, 57860), (526, 41690), (758, 28930), (1052, 20845), (1315, 16676), (1516, 14465), (1895, 11572), (2630, 8338), (2893, 7580), (3790, 5786), (4169, 5260)]