20806317

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19427}}^1$

素因数の和:19457

約数の個数: 24

約数和(自身を含む): 36369216

約数和(自身を除く): 15562899

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 19427, 58281, 135989, 174843, 330259, 407967, 990777, 1223901, 2311813, 2972331, 6935439, 20806317]

約数ペア:

[(1, 20806317), (3, 6935439), (7, 2972331), (9, 2311813), (17, 1223901), (21, 990777), (51, 407967), (63, 330259), (119, 174843), (153, 135989), (357, 58281), (1071, 19427)]