20570445

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{491}}^1$

素因数の和:535

約数の個数: 72

約数和(自身を含む): 43748640

約数和(自身を除く): 23178195

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 49, 57, 63, 95, 105, 133, 147, 171, 245, 285, 315, 399, 441, 491, 665, 735, 855, 931, 1197, 1473, 1995, 2205, 2455, 2793, 3437, 4419, 4655, 5985, 7365, 8379, 9329, 10311, 13965, 17185, 22095, 24059, 27987, 30933, 41895, 46645, 51555, 65303, 72177, 83961, 120295, 139935, 154665, 195909, 216531, 326515, 360885, 419805, 457121, 587727, 979545, 1082655, 1371363, 2285605, 2938635, 4114089, 6856815, 20570445]

約数ペア:

[(1, 20570445), (3, 6856815), (5, 4114089), (7, 2938635), (9, 2285605), (15, 1371363), (19, 1082655), (21, 979545), (35, 587727), (45, 457121), (49, 419805), (57, 360885), (63, 326515), (95, 216531), (105, 195909), (133, 154665), (147, 139935), (171, 120295), (245, 83961), (285, 72177), (315, 65303), (399, 51555), (441, 46645), (491, 41895), (665, 30933), (735, 27987), (855, 24059), (931, 22095), (1197, 17185), (1473, 13965), (1995, 10311), (2205, 9329), (2455, 8379), (2793, 7365), (3437, 5985), (4419, 4655)]