21318411

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{2801}}^1$

素因数の和:2906

約数の個数: 16

約数和(自身を含む): 29589120

約数和(自身を除く): 8270709

約数列:

[1, 3, 43, 59, 129, 177, 2537, 2801, 7611, 8403, 120443, 165259, 361329, 495777, 7106137, 21318411]

約数ペア:

[(1, 21318411), (3, 7106137), (43, 495777), (59, 361329), (129, 165259), (177, 120443), (2537, 8403), (2801, 7611)]