20381946

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{809}}^1$

素因数の和:863

約数の個数: 64

約数和(自身を含む): 48988800

約数和(自身を除く): 28606854

約数列:

[1, 2, 3, 6, 13, 17, 19, 26, 34, 38, 39, 51, 57, 78, 102, 114, 221, 247, 323, 442, 494, 646, 663, 741, 809, 969, 1326, 1482, 1618, 1938, 2427, 4199, 4854, 8398, 10517, 12597, 13753, 15371, 21034, 25194, 27506, 30742, 31551, 41259, 46113, 63102, 82518, 92226, 178789, 199823, 261307, 357578, 399646, 522614, 536367, 599469, 783921, 1072734, 1198938, 1567842, 3396991, 6793982, 10190973, 20381946]

約数ペア:

[(1, 20381946), (2, 10190973), (3, 6793982), (6, 3396991), (13, 1567842), (17, 1198938), (19, 1072734), (26, 783921), (34, 599469), (38, 536367), (39, 522614), (51, 399646), (57, 357578), (78, 261307), (102, 199823), (114, 178789), (221, 92226), (247, 82518), (323, 63102), (442, 46113), (494, 41259), (646, 31551), (663, 30742), (741, 27506), (809, 25194), (969, 21034), (1326, 15371), (1482, 13753), (1618, 12597), (1938, 10517), (2427, 8398), (4199, 4854)]