21042219

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^2\times {\mathrm{227}}^1$

素因数の和:347

約数の個数: 24

約数和(自身を含む): 31332672

約数和(自身を除く): 10290453

約数列:

[1, 3, 11, 33, 53, 159, 227, 583, 681, 1749, 2497, 2809, 7491, 8427, 12031, 30899, 36093, 92697, 132341, 397023, 637643, 1912929, 7014073, 21042219]

約数ペア:

[(1, 21042219), (3, 7014073), (11, 1912929), (33, 637643), (53, 397023), (159, 132341), (227, 92697), (583, 36093), (681, 30899), (1749, 12031), (2497, 8427), (2809, 7491)]