20501028

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{269}}^1$

素因数の和:381

約数の個数: 72

約数和(自身を含む): 54545400

約数和(自身を除く): 34044372

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 58, 73, 87, 116, 146, 174, 219, 261, 269, 292, 348, 438, 522, 538, 657, 807, 876, 1044, 1076, 1314, 1614, 2117, 2421, 2628, 3228, 4234, 4842, 6351, 7801, 8468, 9684, 12702, 15602, 19053, 19637, 23403, 25404, 31204, 38106, 39274, 46806, 58911, 70209, 76212, 78548, 93612, 117822, 140418, 176733, 235644, 280836, 353466, 569473, 706932, 1138946, 1708419, 2277892, 3416838, 5125257, 6833676, 10250514, 20501028]

約数ペア:

[(1, 20501028), (2, 10250514), (3, 6833676), (4, 5125257), (6, 3416838), (9, 2277892), (12, 1708419), (18, 1138946), (29, 706932), (36, 569473), (58, 353466), (73, 280836), (87, 235644), (116, 176733), (146, 140418), (174, 117822), (219, 93612), (261, 78548), (269, 76212), (292, 70209), (348, 58911), (438, 46806), (522, 39274), (538, 38106), (657, 31204), (807, 25404), (876, 23403), (1044, 19637), (1076, 19053), (1314, 15602), (1614, 12702), (2117, 9684), (2421, 8468), (2628, 7801), (3228, 6351), (4234, 4842)]