20986836

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{4639}}^1$

素因数の和:4688

約数の個数: 48

約数和(自身を含む): 54566400

約数和(自身を除く): 33579564

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 29, 39, 52, 58, 78, 87, 116, 156, 174, 348, 377, 754, 1131, 1508, 2262, 4524, 4639, 9278, 13917, 18556, 27834, 55668, 60307, 120614, 134531, 180921, 241228, 269062, 361842, 403593, 538124, 723684, 807186, 1614372, 1748903, 3497806, 5246709, 6995612, 10493418, 20986836]

約数ペア:

[(1, 20986836), (2, 10493418), (3, 6995612), (4, 5246709), (6, 3497806), (12, 1748903), (13, 1614372), (26, 807186), (29, 723684), (39, 538124), (52, 403593), (58, 361842), (78, 269062), (87, 241228), (116, 180921), (156, 134531), (174, 120614), (348, 60307), (377, 55668), (754, 27834), (1131, 18556), (1508, 13917), (2262, 9278), (4524, 4639)]