20994813

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19603}}^1$

素因数の和:19633

約数の個数: 24

約数和(自身を含む): 36698688

約数和(自身を除く): 15703875

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 19603, 58809, 137221, 176427, 333251, 411663, 999753, 1234989, 2332757, 2999259, 6998271, 20994813]

約数ペア:

[(1, 20994813), (3, 6998271), (7, 2999259), (9, 2332757), (17, 1234989), (21, 999753), (51, 411663), (63, 333251), (119, 176427), (153, 137221), (357, 58809), (1071, 19603)]