21215982

素因数分解:

$2^1\times 3^1\times {\mathrm{23}}^1\times {\mathrm{153739}}^1$

素因数の和:153767

約数の個数: 16

約数和(自身を含む): 44277120

約数和(自身を除く): 23061138

約数列:

[1, 2, 3, 6, 23, 46, 69, 138, 153739, 307478, 461217, 922434, 3535997, 7071994, 10607991, 21215982]

約数ペア:

[(1, 21215982), (2, 10607991), (3, 7071994), (6, 3535997), (23, 922434), (46, 461217), (69, 307478), (138, 153739)]