21228636

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:259

約数の個数: 96

約数和(自身を含む): 59270400

約数和(自身を除く): 38041764

約数列:

[1, 2, 3, 4, 6, 11, 12, 13, 22, 26, 33, 39, 44, 52, 66, 78, 89, 132, 139, 143, 156, 178, 267, 278, 286, 356, 417, 429, 534, 556, 572, 834, 858, 979, 1068, 1157, 1529, 1668, 1716, 1807, 1958, 2314, 2937, 3058, 3471, 3614, 3916, 4587, 4628, 5421, 5874, 6116, 6942, 7228, 9174, 10842, 11748, 12371, 12727, 13884, 18348, 19877, 21684, 24742, 25454, 37113, 38181, 39754, 49484, 50908, 59631, 74226, 76362, 79508, 119262, 136081, 148452, 152724, 160823, 238524, 272162, 321646, 408243, 482469, 544324, 643292, 816486, 964938, 1632972, 1769053, 1929876, 3538106, 5307159, 7076212, 10614318, 21228636]

約数ペア:

[(1, 21228636), (2, 10614318), (3, 7076212), (4, 5307159), (6, 3538106), (11, 1929876), (12, 1769053), (13, 1632972), (22, 964938), (26, 816486), (33, 643292), (39, 544324), (44, 482469), (52, 408243), (66, 321646), (78, 272162), (89, 238524), (132, 160823), (139, 152724), (143, 148452), (156, 136081), (178, 119262), (267, 79508), (278, 76362), (286, 74226), (356, 59631), (417, 50908), (429, 49484), (534, 39754), (556, 38181), (572, 37113), (834, 25454), (858, 24742), (979, 21684), (1068, 19877), (1157, 18348), (1529, 13884), (1668, 12727), (1716, 12371), (1807, 11748), (1958, 10842), (2314, 9174), (2937, 7228), (3058, 6942), (3471, 6116), (3614, 5874), (3916, 5421), (4587, 4628)]