80666560

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19391}}^1$

素因数の和:19421

約数の個数: 56

約数和(自身を含む): 206873856

約数和(自身を除く): 126207296

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 19391, 38782, 77564, 96955, 155128, 193910, 252083, 310256, 387820, 504166, 620512, 775640, 1008332, 1241024, 1260415, 1551280, 2016664, 2520830, 3102560, 4033328, 5041660, 6205120, 8066656, 10083320, 16133312, 20166640, 40333280, 80666560]

約数ペア:

[(1, 80666560), (2, 40333280), (4, 20166640), (5, 16133312), (8, 10083320), (10, 8066656), (13, 6205120), (16, 5041660), (20, 4033328), (26, 3102560), (32, 2520830), (40, 2016664), (52, 1551280), (64, 1260415), (65, 1241024), (80, 1008332), (104, 775640), (130, 620512), (160, 504166), (208, 387820), (260, 310256), (320, 252083), (416, 193910), (520, 155128), (832, 96955), (1040, 77564), (2080, 38782), (4160, 19391)]