20891808

素因数分解:

$2^5\times 3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{241}}^1$

素因数の和:307

約数の個数: 144

約数和(自身を含む): 69765696

約数和(自身を除く): 48873888

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 32, 36, 42, 43, 48, 56, 63, 72, 84, 86, 96, 112, 126, 129, 144, 168, 172, 224, 241, 252, 258, 288, 301, 336, 344, 387, 482, 504, 516, 602, 672, 688, 723, 774, 903, 964, 1008, 1032, 1204, 1376, 1446, 1548, 1687, 1806, 1928, 2016, 2064, 2169, 2408, 2709, 2892, 3096, 3374, 3612, 3856, 4128, 4338, 4816, 5061, 5418, 5784, 6192, 6748, 7224, 7712, 8676, 9632, 10122, 10363, 10836, 11568, 12384, 13496, 14448, 15183, 17352, 20244, 20726, 21672, 23136, 26992, 28896, 30366, 31089, 34704, 40488, 41452, 43344, 53984, 60732, 62178, 69408, 72541, 80976, 82904, 86688, 93267, 121464, 124356, 145082, 161952, 165808, 186534, 217623, 242928, 248712, 290164, 331616, 373068, 435246, 485856, 497424, 580328, 652869, 746136, 870492, 994848, 1160656, 1305738, 1492272, 1740984, 2321312, 2611476, 2984544, 3481968, 5222952, 6963936, 10445904, 20891808]

約数ペア:

[(1, 20891808), (2, 10445904), (3, 6963936), (4, 5222952), (6, 3481968), (7, 2984544), (8, 2611476), (9, 2321312), (12, 1740984), (14, 1492272), (16, 1305738), (18, 1160656), (21, 994848), (24, 870492), (28, 746136), (32, 652869), (36, 580328), (42, 497424), (43, 485856), (48, 435246), (56, 373068), (63, 331616), (72, 290164), (84, 248712), (86, 242928), (96, 217623), (112, 186534), (126, 165808), (129, 161952), (144, 145082), (168, 124356), (172, 121464), (224, 93267), (241, 86688), (252, 82904), (258, 80976), (288, 72541), (301, 69408), (336, 62178), (344, 60732), (387, 53984), (482, 43344), (504, 41452), (516, 40488), (602, 34704), (672, 31089), (688, 30366), (723, 28896), (774, 26992), (903, 23136), (964, 21672), (1008, 20726), (1032, 20244), (1204, 17352), (1376, 15183), (1446, 14448), (1548, 13496), (1687, 12384), (1806, 11568), (1928, 10836), (2016, 10363), (2064, 10122), (2169, 9632), (2408, 8676), (2709, 7712), (2892, 7224), (3096, 6748), (3374, 6192), (3612, 5784), (3856, 5418), (4128, 5061), (4338, 4816)]