20963992

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{61}}^1$

素因数の和:129

約数の個数: 96

約数和(自身を含む): 51023520

約数和(自身を除く): 30059528

約数列:

[1, 2, 4, 7, 8, 14, 17, 19, 28, 34, 38, 56, 61, 68, 76, 119, 122, 133, 136, 152, 238, 244, 266, 323, 361, 427, 476, 488, 532, 646, 722, 854, 952, 1037, 1064, 1159, 1292, 1444, 1708, 2074, 2261, 2318, 2527, 2584, 2888, 3416, 4148, 4522, 4636, 5054, 6137, 7259, 8113, 8296, 9044, 9272, 10108, 12274, 14518, 16226, 18088, 19703, 20216, 22021, 24548, 29036, 32452, 39406, 42959, 44042, 49096, 58072, 64904, 78812, 85918, 88084, 137921, 154147, 157624, 171836, 176168, 275842, 308294, 343672, 374357, 551684, 616588, 748714, 1103368, 1233176, 1497428, 2620499, 2994856, 5240998, 10481996, 20963992]

約数ペア:

[(1, 20963992), (2, 10481996), (4, 5240998), (7, 2994856), (8, 2620499), (14, 1497428), (17, 1233176), (19, 1103368), (28, 748714), (34, 616588), (38, 551684), (56, 374357), (61, 343672), (68, 308294), (76, 275842), (119, 176168), (122, 171836), (133, 157624), (136, 154147), (152, 137921), (238, 88084), (244, 85918), (266, 78812), (323, 64904), (361, 58072), (427, 49096), (476, 44042), (488, 42959), (532, 39406), (646, 32452), (722, 29036), (854, 24548), (952, 22021), (1037, 20216), (1064, 19703), (1159, 18088), (1292, 16226), (1444, 14518), (1708, 12274), (2074, 10108), (2261, 9272), (2318, 9044), (2527, 8296), (2584, 8113), (2888, 7259), (3416, 6137), (4148, 5054), (4522, 4636)]