21613298

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{421}}^1$

素因数の和:642

約数の個数: 32

約数和(自身を含む): 39296640

約数和(自身を除く): 17683342

約数列:

[1, 2, 7, 14, 19, 38, 133, 193, 266, 386, 421, 842, 1351, 2702, 2947, 3667, 5894, 7334, 7999, 15998, 25669, 51338, 55993, 81253, 111986, 162506, 568771, 1137542, 1543807, 3087614, 10806649, 21613298]

約数ペア:

[(1, 21613298), (2, 10806649), (7, 3087614), (14, 1543807), (19, 1137542), (38, 568771), (133, 162506), (193, 111986), (266, 81253), (386, 55993), (421, 51338), (842, 25669), (1351, 15998), (2702, 7999), (2947, 7334), (3667, 5894)]