406780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^2$

素因数の和:106

約数の個数: 36

約数和(自身を含む): 954072

約数和(自身を除く): 547292

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 215, 220, 430, 473, 860, 946, 1849, 1892, 2365, 3698, 4730, 7396, 9245, 9460, 18490, 20339, 36980, 40678, 81356, 101695, 203390, 406780]

約数ペア:

[(1, 406780), (2, 203390), (4, 101695), (5, 81356), (10, 40678), (11, 36980), (20, 20339), (22, 18490), (43, 9460), (44, 9245), (55, 7396), (86, 4730), (110, 3698), (172, 2365), (215, 1892), (220, 1849), (430, 946), (473, 860)]