20992270

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{5209}}^1$

素因数の和:5260

約数の個数: 32

約数和(自身を含む): 42013440

約数和(自身を除く): 21021170

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 5209, 10418, 26045, 52090, 67717, 135434, 161479, 322958, 338585, 677170, 807395, 1614790, 2099227, 4198454, 10496135, 20992270]

約数ペア:

[(1, 20992270), (2, 10496135), (5, 4198454), (10, 2099227), (13, 1614790), (26, 807395), (31, 677170), (62, 338585), (65, 322958), (130, 161479), (155, 135434), (310, 67717), (403, 52090), (806, 26045), (2015, 10418), (4030, 5209)]