21385926

素因数分解:

$2^1\times 3^2\times {\mathrm{37}}^1\times {\mathrm{163}}^1\times {\mathrm{197}}^1$

素因数の和:405

約数の個数: 48

約数和(自身を含む): 48123504

約数和(自身を除く): 26737578

約数列:

[1, 2, 3, 6, 9, 18, 37, 74, 111, 163, 197, 222, 326, 333, 394, 489, 591, 666, 978, 1182, 1467, 1773, 2934, 3546, 6031, 7289, 12062, 14578, 18093, 21867, 32111, 36186, 43734, 54279, 64222, 65601, 96333, 108558, 131202, 192666, 288999, 577998, 1188107, 2376214, 3564321, 7128642, 10692963, 21385926]

約数ペア:

[(1, 21385926), (2, 10692963), (3, 7128642), (6, 3564321), (9, 2376214), (18, 1188107), (37, 577998), (74, 288999), (111, 192666), (163, 131202), (197, 108558), (222, 96333), (326, 65601), (333, 64222), (394, 54279), (489, 43734), (591, 36186), (666, 32111), (978, 21867), (1182, 18093), (1467, 14578), (1773, 12062), (2934, 7289), (3546, 6031)]