21291897

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{401}}^1\times {\mathrm{1609}}^1$

素因数の和:2024

約数の個数: 16

約数和(自身を含む): 31066560

約数和(自身を除く): 9774663

約数列:

[1, 3, 11, 33, 401, 1203, 1609, 4411, 4827, 13233, 17699, 53097, 645209, 1935627, 7097299, 21291897]

約数ペア:

[(1, 21291897), (3, 7097299), (11, 1935627), (33, 645209), (401, 53097), (1203, 17699), (1609, 13233), (4411, 4827)]