78541540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{51001}}^1$

素因数の和:51028

約数の個数: 48

約数和(自身を含む): 205640064

約数和(自身を除く): 127098524

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, 51001, 102002, 204004, 255005, 357007, 510010, 561011, 714014, 1020020, 1122022, 1428028, 1785035, 2244044, 2805055, 3570070, 3927077, 5610110, 7140140, 7854154, 11220220, 15708308, 19635385, 39270770, 78541540]

約数ペア:

[(1, 78541540), (2, 39270770), (4, 19635385), (5, 15708308), (7, 11220220), (10, 7854154), (11, 7140140), (14, 5610110), (20, 3927077), (22, 3570070), (28, 2805055), (35, 2244044), (44, 1785035), (55, 1428028), (70, 1122022), (77, 1020020), (110, 714014), (140, 561011), (154, 510010), (220, 357007), (308, 255005), (385, 204004), (770, 102002), (1540, 51001)]