21716919

素因数分解:

$3^2\times 7^1\times {\mathrm{101}}^1\times {\mathrm{3413}}^1$

素因数の和:3527

約数の個数: 24

約数和(自身を含む): 36215712

約数和(自身を除く): 14498793

約数列:

[1, 3, 7, 9, 21, 63, 101, 303, 707, 909, 2121, 3413, 6363, 10239, 23891, 30717, 71673, 215019, 344713, 1034139, 2412991, 3102417, 7238973, 21716919]

約数ペア:

[(1, 21716919), (3, 7238973), (7, 3102417), (9, 2412991), (21, 1034139), (63, 344713), (101, 215019), (303, 71673), (707, 30717), (909, 23891), (2121, 10239), (3413, 6363)]