20804513505

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{9551}}^1\times {\mathrm{7643}}^1$

素因数の和:17221

約数の個数: 32

約数和(自身を含む): 35047434240

約数和(自身を除く): 14242920735

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 7643, 9551, 22929, 28653, 38215, 47755, 114645, 143265, 145217, 181469, 435651, 544407, 726085, 907345, 2178255, 2722035, 72998293, 218994879, 364991465, 1094974395, 1386967567, 4160902701, 6934837835, 20804513505]

約数ペア:

[(1, 20804513505), (3, 6934837835), (5, 4160902701), (15, 1386967567), (19, 1094974395), (57, 364991465), (95, 218994879), (285, 72998293), (7643, 2722035), (9551, 2178255), (22929, 907345), (28653, 726085), (38215, 544407), (47755, 435651), (114645, 181469), (143265, 145217)]