21494005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{10667}}^1$

素因数の和:10716

約数の個数: 16

約数和(自身を含む): 28675584

約数和(自身を除く): 7181579

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 10667, 53335, 138671, 330677, 693355, 1653385, 4298801, 21494005]

約数ペア:

[(1, 21494005), (5, 4298801), (13, 1653385), (31, 693355), (65, 330677), (155, 138671), (403, 53335), (2015, 10667)]