21921747

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{1019}}^1$

素因数の和:1194

約数の個数: 16

約数和(自身を含む): 29963520

約数和(自身を除く): 8041773

約数列:

[1, 3, 71, 101, 213, 303, 1019, 3057, 7171, 21513, 72349, 102919, 217047, 308757, 7307249, 21921747]

約数ペア:

[(1, 21921747), (3, 7307249), (71, 308757), (101, 217047), (213, 102919), (303, 72349), (1019, 21513), (3057, 7171)]