7841960

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{4001}}^1$

素因数の和:4026

約数の個数: 48

約数和(自身を含む): 20530260

約数和(自身を除く): 12688300

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 4001, 8002, 16004, 20005, 28007, 32008, 40010, 56014, 80020, 112028, 140035, 160040, 196049, 224056, 280070, 392098, 560140, 784196, 980245, 1120280, 1568392, 1960490, 3920980, 7841960]

約数ペア:

[(1, 7841960), (2, 3920980), (4, 1960490), (5, 1568392), (7, 1120280), (8, 980245), (10, 784196), (14, 560140), (20, 392098), (28, 280070), (35, 224056), (40, 196049), (49, 160040), (56, 140035), (70, 112028), (98, 80020), (140, 56014), (196, 40010), (245, 32008), (280, 28007), (392, 20005), (490, 16004), (980, 8002), (1960, 4001)]