20656428

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{7789}}^1$

素因数の和:7826

約数の個数: 48

約数和(自身を含む): 54966240

約数和(自身を除く): 34309812

約数列:

[1, 2, 3, 4, 6, 12, 13, 17, 26, 34, 39, 51, 52, 68, 78, 102, 156, 204, 221, 442, 663, 884, 1326, 2652, 7789, 15578, 23367, 31156, 46734, 93468, 101257, 132413, 202514, 264826, 303771, 397239, 405028, 529652, 607542, 794478, 1215084, 1588956, 1721369, 3442738, 5164107, 6885476, 10328214, 20656428]

約数ペア:

[(1, 20656428), (2, 10328214), (3, 6885476), (4, 5164107), (6, 3442738), (12, 1721369), (13, 1588956), (17, 1215084), (26, 794478), (34, 607542), (39, 529652), (51, 405028), (52, 397239), (68, 303771), (78, 264826), (102, 202514), (156, 132413), (204, 101257), (221, 93468), (442, 46734), (663, 31156), (884, 23367), (1326, 15578), (2652, 7789)]