21058916

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{401}}^1\times {\mathrm{691}}^1$

素因数の和:1115

約数の個数: 24

約数和(自身を含む): 38945760

約数和(自身を除く): 17886844

約数列:

[1, 2, 4, 19, 38, 76, 401, 691, 802, 1382, 1604, 2764, 7619, 13129, 15238, 26258, 30476, 52516, 277091, 554182, 1108364, 5264729, 10529458, 21058916]

約数ペア:

[(1, 21058916), (2, 10529458), (4, 5264729), (19, 1108364), (38, 554182), (76, 277091), (401, 52516), (691, 30476), (802, 26258), (1382, 15238), (1604, 13129), (2764, 7619)]