21221387

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{2267}}^1$

素因数の和:2338

約数の個数: 16

約数和(自身を含む): 24820992

約数和(自身を除く): 3599605

約数列:

[1, 11, 23, 37, 253, 407, 851, 2267, 9361, 24937, 52141, 83879, 573551, 922669, 1929217, 21221387]

約数ペア:

[(1, 21221387), (11, 1929217), (23, 922669), (37, 573551), (253, 83879), (407, 52141), (851, 24937), (2267, 9361)]