21437217

素因数分解:

$3^5\times {\mathrm{47}}^1\times {\mathrm{1877}}^1$

素因数の和:1939

約数の個数: 24

約数和(自身を含む): 32812416

約数和(自身を除く): 11375199

約数列:

[1, 3, 9, 27, 47, 81, 141, 243, 423, 1269, 1877, 3807, 5631, 11421, 16893, 50679, 88219, 152037, 264657, 456111, 793971, 2381913, 7145739, 21437217]

約数ペア:

[(1, 21437217), (3, 7145739), (9, 2381913), (27, 793971), (47, 456111), (81, 264657), (141, 152037), (243, 88219), (423, 50679), (1269, 16893), (1877, 11421), (3807, 5631)]