20858656

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1$

素因数の和:91

約数の個数: 144

約数和(自身を含む): 55339200

約数和(自身を除く): 34480544

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 19, 26, 28, 29, 32, 38, 52, 56, 58, 76, 91, 104, 112, 116, 133, 152, 169, 182, 203, 208, 224, 232, 247, 266, 304, 338, 364, 377, 406, 416, 464, 494, 532, 551, 608, 676, 728, 754, 812, 928, 988, 1064, 1102, 1183, 1352, 1456, 1508, 1624, 1729, 1976, 2128, 2204, 2366, 2639, 2704, 2912, 3016, 3211, 3248, 3458, 3857, 3952, 4256, 4408, 4732, 4901, 5278, 5408, 6032, 6422, 6496, 6916, 7163, 7714, 7904, 8816, 9464, 9802, 10556, 12064, 12844, 13832, 14326, 15428, 17632, 18928, 19604, 21112, 22477, 25688, 27664, 28652, 30856, 34307, 37856, 39208, 42224, 44954, 50141, 51376, 55328, 57304, 61712, 68614, 78416, 84448, 89908, 93119, 100282, 102752, 114608, 123424, 137228, 156832, 179816, 186238, 200564, 229216, 274456, 359632, 372476, 401128, 548912, 651833, 719264, 744952, 802256, 1097824, 1303666, 1489904, 1604512, 2607332, 2979808, 5214664, 10429328, 20858656]

約数ペア:

[(1, 20858656), (2, 10429328), (4, 5214664), (7, 2979808), (8, 2607332), (13, 1604512), (14, 1489904), (16, 1303666), (19, 1097824), (26, 802256), (28, 744952), (29, 719264), (32, 651833), (38, 548912), (52, 401128), (56, 372476), (58, 359632), (76, 274456), (91, 229216), (104, 200564), (112, 186238), (116, 179816), (133, 156832), (152, 137228), (169, 123424), (182, 114608), (203, 102752), (208, 100282), (224, 93119), (232, 89908), (247, 84448), (266, 78416), (304, 68614), (338, 61712), (364, 57304), (377, 55328), (406, 51376), (416, 50141), (464, 44954), (494, 42224), (532, 39208), (551, 37856), (608, 34307), (676, 30856), (728, 28652), (754, 27664), (812, 25688), (928, 22477), (988, 21112), (1064, 19604), (1102, 18928), (1183, 17632), (1352, 15428), (1456, 14326), (1508, 13832), (1624, 12844), (1729, 12064), (1976, 10556), (2128, 9802), (2204, 9464), (2366, 8816), (2639, 7904), (2704, 7714), (2912, 7163), (3016, 6916), (3211, 6496), (3248, 6422), (3458, 6032), (3857, 5408), (3952, 5278), (4256, 4901), (4408, 4732)]