21639695

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{56207}}^1$

素因数の和:56230

約数の個数: 16

約数和(自身を含む): 32375808

約数和(自身を除く): 10736113

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 56207, 281035, 393449, 618277, 1967245, 3091385, 4327939, 21639695]

約数ペア:

[(1, 21639695), (5, 4327939), (7, 3091385), (11, 1967245), (35, 618277), (55, 393449), (77, 281035), (385, 56207)]