21015918

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{257}}^1$

素因数の和:342

約数の個数: 96

約数和(自身を含む): 57957120

約数和(自身を除く): 36941202

約数列:

[1, 2, 3, 6, 7, 9, 11, 14, 18, 21, 22, 33, 42, 59, 63, 66, 77, 99, 118, 126, 154, 177, 198, 231, 257, 354, 413, 462, 514, 531, 649, 693, 771, 826, 1062, 1239, 1298, 1386, 1542, 1799, 1947, 2313, 2478, 2827, 3598, 3717, 3894, 4543, 4626, 5397, 5654, 5841, 7434, 8481, 9086, 10794, 11682, 13629, 15163, 16191, 16962, 19789, 25443, 27258, 30326, 32382, 39578, 40887, 45489, 50886, 59367, 81774, 90978, 106141, 118734, 136467, 166793, 178101, 212282, 272934, 318423, 333586, 356202, 500379, 636846, 955269, 1000758, 1167551, 1501137, 1910538, 2335102, 3002274, 3502653, 7005306, 10507959, 21015918]

約数ペア:

[(1, 21015918), (2, 10507959), (3, 7005306), (6, 3502653), (7, 3002274), (9, 2335102), (11, 1910538), (14, 1501137), (18, 1167551), (21, 1000758), (22, 955269), (33, 636846), (42, 500379), (59, 356202), (63, 333586), (66, 318423), (77, 272934), (99, 212282), (118, 178101), (126, 166793), (154, 136467), (177, 118734), (198, 106141), (231, 90978), (257, 81774), (354, 59367), (413, 50886), (462, 45489), (514, 40887), (531, 39578), (649, 32382), (693, 30326), (771, 27258), (826, 25443), (1062, 19789), (1239, 16962), (1298, 16191), (1386, 15163), (1542, 13629), (1799, 11682), (1947, 10794), (2313, 9086), (2478, 8481), (2827, 7434), (3598, 5841), (3717, 5654), (3894, 5397), (4543, 4626)]