2181820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^2\times {\mathrm{59}}^1$

素因数の和:154

約数の個数: 36

約数和(自身を含む): 4770360

約数和(自身を除く): 2588540

約数列:

[1, 2, 4, 5, 10, 20, 43, 59, 86, 118, 172, 215, 236, 295, 430, 590, 860, 1180, 1849, 2537, 3698, 5074, 7396, 9245, 10148, 12685, 18490, 25370, 36980, 50740, 109091, 218182, 436364, 545455, 1090910, 2181820]

約数ペア:

[(1, 2181820), (2, 1090910), (4, 545455), (5, 436364), (10, 218182), (20, 109091), (43, 50740), (59, 36980), (86, 25370), (118, 18490), (172, 12685), (215, 10148), (236, 9245), (295, 7396), (430, 5074), (590, 3698), (860, 2537), (1180, 1849)]