20166640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19391}}^1$

素因数の和:19417

約数の個数: 40

約数和(自身を含む): 50496768

約数和(自身を除く): 30330128

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 19391, 38782, 77564, 96955, 155128, 193910, 252083, 310256, 387820, 504166, 775640, 1008332, 1260415, 1551280, 2016664, 2520830, 4033328, 5041660, 10083320, 20166640]

約数ペア:

[(1, 20166640), (2, 10083320), (4, 5041660), (5, 4033328), (8, 2520830), (10, 2016664), (13, 1551280), (16, 1260415), (20, 1008332), (26, 775640), (40, 504166), (52, 387820), (65, 310256), (80, 252083), (104, 193910), (130, 155128), (208, 96955), (260, 77564), (520, 38782), (1040, 19391)]