21951706

素因数分解:

$2^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{9739}}^1$

素因数の和:9778

約数の個数: 24

約数和(自身を含む): 39972960

約数和(自身を除く): 18021254

約数列:

[1, 2, 7, 14, 23, 46, 49, 98, 161, 322, 1127, 2254, 9739, 19478, 68173, 136346, 223997, 447994, 477211, 954422, 1567979, 3135958, 10975853, 21951706]

約数ペア:

[(1, 21951706), (2, 10975853), (7, 3135958), (14, 1567979), (23, 954422), (46, 477211), (49, 447994), (98, 223997), (161, 136346), (322, 68173), (1127, 19478), (2254, 9739)]