20080305

素因数分解:

$3^6\times 5^1\times 7^1\times {\mathrm{787}}^1$

素因数の和:817

約数の個数: 56

約数和(自身を含む): 41341632

約数和(自身を除く): 21261327

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 243, 315, 405, 567, 729, 787, 945, 1215, 1701, 2361, 2835, 3645, 3935, 5103, 5509, 7083, 8505, 11805, 16527, 21249, 25515, 27545, 35415, 49581, 63747, 82635, 106245, 148743, 191241, 247905, 318735, 446229, 573723, 743715, 956205, 1338687, 2231145, 2868615, 4016061, 6693435, 20080305]

約数ペア:

[(1, 20080305), (3, 6693435), (5, 4016061), (7, 2868615), (9, 2231145), (15, 1338687), (21, 956205), (27, 743715), (35, 573723), (45, 446229), (63, 318735), (81, 247905), (105, 191241), (135, 148743), (189, 106245), (243, 82635), (315, 63747), (405, 49581), (567, 35415), (729, 27545), (787, 25515), (945, 21249), (1215, 16527), (1701, 11805), (2361, 8505), (2835, 7083), (3645, 5509), (3935, 5103)]