21806818

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{293}}^1$

素因数の和:522

約数の個数: 32

約数和(自身を含む): 38102400

約数和(自身を除く): 16295582

約数列:

[1, 2, 11, 17, 22, 34, 187, 199, 293, 374, 398, 586, 2189, 3223, 3383, 4378, 4981, 6446, 6766, 9962, 37213, 54791, 58307, 74426, 109582, 116614, 641377, 991219, 1282754, 1982438, 10903409, 21806818]

約数ペア:

[(1, 21806818), (2, 10903409), (11, 1982438), (17, 1282754), (22, 991219), (34, 641377), (187, 116614), (199, 109582), (293, 74426), (374, 58307), (398, 54791), (586, 37213), (2189, 9962), (3223, 6766), (3383, 6446), (4378, 4981)]