180460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1289}}^1$

素因数の和:1305

約数の個数: 24

約数和(自身を含む): 433440

約数和(自身を除く): 252980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1289, 2578, 5156, 6445, 9023, 12890, 18046, 25780, 36092, 45115, 90230, 180460]

約数ペア:

[(1, 180460), (2, 90230), (4, 45115), (5, 36092), (7, 25780), (10, 18046), (14, 12890), (20, 9023), (28, 6445), (35, 5156), (70, 2578), (140, 1289)]