21707260

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^2\times {\mathrm{587}}^1$

素因数の和:682

約数の個数: 36

約数和(自身を含む): 46749528

約数和(自身を除く): 25042268

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 587, 860, 1174, 1849, 2348, 2935, 3698, 5870, 7396, 9245, 11740, 18490, 25241, 36980, 50482, 100964, 126205, 252410, 504820, 1085363, 2170726, 4341452, 5426815, 10853630, 21707260]

約数ペア:

[(1, 21707260), (2, 10853630), (4, 5426815), (5, 4341452), (10, 2170726), (20, 1085363), (43, 504820), (86, 252410), (172, 126205), (215, 100964), (430, 50482), (587, 36980), (860, 25241), (1174, 18490), (1849, 11740), (2348, 9245), (2935, 7396), (3698, 5870)]