221509421

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{277}}^1\times {\mathrm{1609}}^1$

素因数の和:1964

約数の個数: 16

約数和(自身を含む): 257806080

約数和(自身を除く): 36296659

約数列:

[1, 7, 71, 277, 497, 1609, 1939, 11263, 19667, 114239, 137669, 445693, 799673, 3119851, 31644203, 221509421]

約数ペア:

[(1, 221509421), (7, 31644203), (71, 3119851), (277, 799673), (497, 445693), (1609, 137669), (1939, 114239), (11263, 19667)]