90149080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{321961}}^1$

素因数の和:321979

約数の個数: 32

約数和(自身を含む): 231812640

約数和(自身を除く): 141663560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 321961, 643922, 1287844, 1609805, 2253727, 2575688, 3219610, 4507454, 6439220, 9014908, 11268635, 12878440, 18029816, 22537270, 45074540, 90149080]

約数ペア:

[(1, 90149080), (2, 45074540), (4, 22537270), (5, 18029816), (7, 12878440), (8, 11268635), (10, 9014908), (14, 6439220), (20, 4507454), (28, 3219610), (35, 2575688), (40, 2253727), (56, 1609805), (70, 1287844), (140, 643922), (280, 321961)]