8820980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{9001}}^1$

素因数の和:9024

約数の個数: 36

約数和(自身を含む): 21550788

約数和(自身を除く): 12729808

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 9001, 18002, 36004, 45005, 63007, 90010, 126014, 180020, 252028, 315035, 441049, 630070, 882098, 1260140, 1764196, 2205245, 4410490, 8820980]

約数ペア:

[(1, 8820980), (2, 4410490), (4, 2205245), (5, 1764196), (7, 1260140), (10, 882098), (14, 630070), (20, 441049), (28, 315035), (35, 252028), (49, 180020), (70, 126014), (98, 90010), (140, 63007), (196, 45005), (245, 36004), (490, 18002), (980, 9001)]