21237417

素因数分解:

$3^3\times {\mathrm{149}}^1\times {\mathrm{5279}}^1$

素因数の和:5437

約数の個数: 16

約数和(自身を含む): 31680000

約数和(自身を除く): 10442583

約数列:

[1, 3, 9, 27, 149, 447, 1341, 4023, 5279, 15837, 47511, 142533, 786571, 2359713, 7079139, 21237417]

約数ペア:

[(1, 21237417), (3, 7079139), (9, 2359713), (27, 786571), (149, 142533), (447, 47511), (1341, 15837), (4023, 5279)]