2187620

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1229}}^1$

素因数の和:1327

約数の個数: 24

約数和(自身を含む): 4649400

約数和(自身を除く): 2461780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1229, 1780, 2458, 4916, 6145, 12290, 24580, 109381, 218762, 437524, 546905, 1093810, 2187620]

約数ペア:

[(1, 2187620), (2, 1093810), (4, 546905), (5, 437524), (10, 218762), (20, 109381), (89, 24580), (178, 12290), (356, 6145), (445, 4916), (890, 2458), (1229, 1780)]