21347060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{3719}}^1$

素因数の和:3776

約数の個数: 48

約数和(自身を含む): 52496640

約数和(自身を除く): 31149580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 140, 164, 205, 287, 410, 574, 820, 1148, 1435, 2870, 3719, 5740, 7438, 14876, 18595, 26033, 37190, 52066, 74380, 104132, 130165, 152479, 260330, 304958, 520660, 609916, 762395, 1067353, 1524790, 2134706, 3049580, 4269412, 5336765, 10673530, 21347060]

約数ペア:

[(1, 21347060), (2, 10673530), (4, 5336765), (5, 4269412), (7, 3049580), (10, 2134706), (14, 1524790), (20, 1067353), (28, 762395), (35, 609916), (41, 520660), (70, 304958), (82, 260330), (140, 152479), (164, 130165), (205, 104132), (287, 74380), (410, 52066), (574, 37190), (820, 26033), (1148, 18595), (1435, 14876), (2870, 7438), (3719, 5740)]