12751280

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8389}}^1$

素因数の和:8421

約数の個数: 40

約数和(自身を含む): 31210800

約数和(自身を除く): 18459520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 8389, 16778, 33556, 41945, 67112, 83890, 134224, 159391, 167780, 318782, 335560, 637564, 671120, 796955, 1275128, 1593910, 2550256, 3187820, 6375640, 12751280]

約数ペア:

[(1, 12751280), (2, 6375640), (4, 3187820), (5, 2550256), (8, 1593910), (10, 1275128), (16, 796955), (19, 671120), (20, 637564), (38, 335560), (40, 318782), (76, 167780), (80, 159391), (95, 134224), (152, 83890), (190, 67112), (304, 41945), (380, 33556), (760, 16778), (1520, 8389)]