21116907

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19717}}^1$

素因数の和:19747

約数の個数: 24

約数和(自身を含む): 36912096

約数和(自身を除く): 15795189

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 19717, 59151, 138019, 177453, 335189, 414057, 1005567, 1242171, 2346323, 3016701, 7038969, 21116907]

約数ペア:

[(1, 21116907), (3, 7038969), (7, 3016701), (9, 2346323), (17, 1242171), (21, 1005567), (51, 414057), (63, 335189), (119, 177453), (153, 138019), (357, 59151), (1071, 19717)]