31426780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{20407}}^1$

素因数の和:20434

約数の個数: 48

約数和(自身を含む): 82285056

約数和(自身を除く): 50858276

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 20407, 40814, 81628, 102035, 142849, 204070, 224477, 285698, 408140, 448954, 571396, 714245, 897908, 1122385, 1428490, 1571339, 2244770, 2856980, 3142678, 4489540, 6285356, 7856695, 15713390, 31426780]

約数ペア:

[(1, 31426780), (2, 15713390), (4, 7856695), (5, 6285356), (7, 4489540), (10, 3142678), (11, 2856980), (14, 2244770), (20, 1571339), (22, 1428490), (28, 1122385), (35, 897908), (44, 714245), (55, 571396), (70, 448954), (77, 408140), (110, 285698), (140, 224477), (154, 204070), (220, 142849), (308, 102035), (385, 81628), (770, 40814), (1540, 20407)]