21431564

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{467}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 47174400

約数和(自身を除く): 25742836

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 149, 154, 298, 308, 467, 596, 934, 1043, 1639, 1868, 2086, 3269, 3278, 4172, 5137, 6538, 6556, 10274, 11473, 13076, 20548, 22946, 35959, 45892, 69583, 71918, 139166, 143836, 278332, 487081, 765413, 974162, 1530826, 1948324, 3061652, 5357891, 10715782, 21431564]

約数ペア:

[(1, 21431564), (2, 10715782), (4, 5357891), (7, 3061652), (11, 1948324), (14, 1530826), (22, 974162), (28, 765413), (44, 487081), (77, 278332), (149, 143836), (154, 139166), (298, 71918), (308, 69583), (467, 45892), (596, 35959), (934, 22946), (1043, 20548), (1639, 13076), (1868, 11473), (2086, 10274), (3269, 6556), (3278, 6538), (4172, 5137)]