21391426

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{2143}}^1$

素因数の和:2206

約数の個数: 32

約数和(自身を含む): 39518208

約数和(自身を除く): 18126782

約数列:

[1, 2, 7, 14, 23, 31, 46, 62, 161, 217, 322, 434, 713, 1426, 2143, 4286, 4991, 9982, 15001, 30002, 49289, 66433, 98578, 132866, 345023, 465031, 690046, 930062, 1527959, 3055918, 10695713, 21391426]

約数ペア:

[(1, 21391426), (2, 10695713), (7, 3055918), (14, 1527959), (23, 930062), (31, 690046), (46, 465031), (62, 345023), (161, 132866), (217, 98578), (322, 66433), (434, 49289), (713, 30002), (1426, 15001), (2143, 9982), (4286, 4991)]