21249907

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{1483}}^1$

素因数の和:1602

約数の個数: 16

約数和(自身を含む): 25643520

約数和(自身を除く): 4393613

約数列:

[1, 7, 23, 89, 161, 623, 1483, 2047, 10381, 14329, 34109, 131987, 238763, 923909, 3035701, 21249907]

約数ペア:

[(1, 21249907), (7, 3035701), (23, 923909), (89, 238763), (161, 131987), (623, 34109), (1483, 14329), (2047, 10381)]