19934395

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{761}}^1$

素因数の和:823

約数の個数: 24

約数和(自身を含む): 26773632

約数和(自身を除く): 6839237

約数列:

[1, 5, 13, 31, 65, 155, 169, 403, 761, 845, 2015, 3805, 5239, 9893, 23591, 26195, 49465, 117955, 128609, 306683, 643045, 1533415, 3986879, 19934395]

約数ペア:

[(1, 19934395), (5, 3986879), (13, 1533415), (31, 643045), (65, 306683), (155, 128609), (169, 117955), (403, 49465), (761, 26195), (845, 23591), (2015, 9893), (3805, 5239)]