21850115

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{27143}}^1$

素因数の和:27178

約数の個数: 16

約数和(自身を含む): 31269888

約数和(自身を除く): 9419773

約数列:

[1, 5, 7, 23, 35, 115, 161, 805, 27143, 135715, 190001, 624289, 950005, 3121445, 4370023, 21850115]

約数ペア:

[(1, 21850115), (5, 4370023), (7, 3121445), (23, 950005), (35, 624289), (115, 190001), (161, 135715), (805, 27143)]