20430085

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{10139}}^1$

素因数の和:10188

約数の個数: 16

約数和(自身を含む): 27256320

約数和(自身を除く): 6826235

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 10139, 50695, 131807, 314309, 659035, 1571545, 4086017, 20430085]

約数ペア:

[(1, 20430085), (5, 4086017), (13, 1571545), (31, 659035), (65, 314309), (155, 131807), (403, 50695), (2015, 10139)]