3920980

素因数分解:

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

素因数の和:4024

約数の個数: 36

約数和(自身を含む): 9580788

約数和(自身を除く): 5659808

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 4001, 8002, 16004, 20005, 28007, 40010, 56014, 80020, 112028, 140035, 196049, 280070, 392098, 560140, 784196, 980245, 1960490, 3920980]

約数ペア:

[(1, 3920980), (2, 1960490), (4, 980245), (5, 784196), (7, 560140), (10, 392098), (14, 280070), (20, 196049), (28, 140035), (35, 112028), (49, 80020), (70, 56014), (98, 40010), (140, 28007), (196, 20005), (245, 16004), (490, 8002), (980, 4001)]