21661508

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^2$

素因数の和:272

約数の個数: 36

約数和(自身を含む): 42714672

約数和(自身を除く): 21053164

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 107, 172, 214, 428, 473, 946, 1177, 1892, 2354, 4601, 4708, 9202, 11449, 18404, 22898, 45796, 50611, 101222, 125939, 202444, 251878, 492307, 503756, 984614, 1969228, 5415377, 10830754, 21661508]

約数ペア:

[(1, 21661508), (2, 10830754), (4, 5415377), (11, 1969228), (22, 984614), (43, 503756), (44, 492307), (86, 251878), (107, 202444), (172, 125939), (214, 101222), (428, 50611), (473, 45796), (946, 22898), (1177, 18404), (1892, 11449), (2354, 9202), (4601, 4708)]