21155463

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19753}}^1$

素因数の和:19783

約数の個数: 24

約数和(自身を含む): 36979488

約数和(自身を除く): 15824025

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 19753, 59259, 138271, 177777, 335801, 414813, 1007403, 1244439, 2350607, 3022209, 7051821, 21155463]

約数ペア:

[(1, 21155463), (3, 7051821), (7, 3022209), (9, 2350607), (17, 1244439), (21, 1007403), (51, 414813), (63, 335801), (119, 177777), (153, 138271), (357, 59259), (1071, 19753)]