21719705

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{26981}}^1$

素因数の和:27016

約数の個数: 16

約数和(自身を含む): 31083264

約数和(自身を除く): 9363559

約数列:

[1, 5, 7, 23, 35, 115, 161, 805, 26981, 134905, 188867, 620563, 944335, 3102815, 4343941, 21719705]

約数ペア:

[(1, 21719705), (5, 4343941), (7, 3102815), (23, 944335), (35, 620563), (115, 188867), (161, 134905), (805, 26981)]