20354300

素因数分解:

$2^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{2287}}^1$

素因数の和:2390

約数の個数: 36

約数和(自身を含む): 44684640

約数和(自身を除く): 24330340

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 89, 100, 178, 356, 445, 890, 1780, 2225, 2287, 4450, 4574, 8900, 9148, 11435, 22870, 45740, 57175, 114350, 203543, 228700, 407086, 814172, 1017715, 2035430, 4070860, 5088575, 10177150, 20354300]

約数ペア:

[(1, 20354300), (2, 10177150), (4, 5088575), (5, 4070860), (10, 2035430), (20, 1017715), (25, 814172), (50, 407086), (89, 228700), (100, 203543), (178, 114350), (356, 57175), (445, 45740), (890, 22870), (1780, 11435), (2225, 9148), (2287, 8900), (4450, 4574)]