20931145

素因数分解:

$5^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1\times {\mathrm{419}}^1$

素因数の和:624

約数の個数: 16

約数和(自身を含む): 25683840

約数和(自身を除く): 4752695

約数列:

[1, 5, 97, 103, 419, 485, 515, 2095, 9991, 40643, 43157, 49955, 203215, 215785, 4186229, 20931145]

約数ペア:

[(1, 20931145), (5, 4186229), (97, 215785), (103, 203215), (419, 49955), (485, 43157), (515, 40643), (2095, 9991)]