21351972

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1319}}^1$

素因数の和:1416

約数の個数: 48

約数和(自身を含む): 53222400

約数和(自身を除く): 31870428

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 71, 76, 114, 142, 213, 228, 284, 426, 852, 1319, 1349, 2638, 2698, 3957, 4047, 5276, 5396, 7914, 8094, 15828, 16188, 25061, 50122, 75183, 93649, 100244, 150366, 187298, 280947, 300732, 374596, 561894, 1123788, 1779331, 3558662, 5337993, 7117324, 10675986, 21351972]

約数ペア:

[(1, 21351972), (2, 10675986), (3, 7117324), (4, 5337993), (6, 3558662), (12, 1779331), (19, 1123788), (38, 561894), (57, 374596), (71, 300732), (76, 280947), (114, 187298), (142, 150366), (213, 100244), (228, 93649), (284, 75183), (426, 50122), (852, 25061), (1319, 16188), (1349, 15828), (2638, 8094), (2698, 7914), (3957, 5396), (4047, 5276)]