21372411

素因数分解:

$3^1\times {\mathrm{137}}^1\times {\mathrm{149}}^1\times {\mathrm{349}}^1$

素因数の和:638

約数の個数: 16

約数和(自身を含む): 28980000

約数和(自身を除く): 7607589

約数列:

[1, 3, 137, 149, 349, 411, 447, 1047, 20413, 47813, 52001, 61239, 143439, 156003, 7124137, 21372411]

約数ペア:

[(1, 21372411), (3, 7124137), (137, 156003), (149, 143439), (349, 61239), (411, 52001), (447, 47813), (1047, 20413)]