12979280

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8539}}^1$

素因数の和:8571

約数の個数: 40

約数和(自身を含む): 31768800

約数和(自身を除く): 18789520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 8539, 17078, 34156, 42695, 68312, 85390, 136624, 162241, 170780, 324482, 341560, 648964, 683120, 811205, 1297928, 1622410, 2595856, 3244820, 6489640, 12979280]

約数ペア:

[(1, 12979280), (2, 6489640), (4, 3244820), (5, 2595856), (8, 1622410), (10, 1297928), (16, 811205), (19, 683120), (20, 648964), (38, 341560), (40, 324482), (76, 170780), (80, 162241), (95, 136624), (152, 85390), (190, 68312), (304, 42695), (380, 34156), (760, 17078), (1520, 8539)]