19687015

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{809}}^1$

素因数の和:1002

約数の個数: 16

約数和(自身を含む): 24572160

約数和(自身を除く): 4885145

約数列:

[1, 5, 31, 155, 157, 785, 809, 4045, 4867, 24335, 25079, 125395, 127013, 635065, 3937403, 19687015]

約数ペア:

[(1, 19687015), (5, 3937403), (31, 635065), (155, 127013), (157, 125395), (785, 25079), (809, 24335), (4045, 4867)]