21306590

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73471}}^1$

素因数の和:73507

約数の個数: 16

約数和(自身を含む): 39674880

約数和(自身を除く): 18368290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 73471, 146942, 367355, 734710, 2130659, 4261318, 10653295, 21306590]

約数ペア:

[(1, 21306590), (2, 10653295), (5, 4261318), (10, 2130659), (29, 734710), (58, 367355), (145, 146942), (290, 73471)]