21680406

素因数分解:

$2^1\times 3^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1$

素因数の和:171

約数の個数: 128

約数和(自身を含む): 59097600

約数和(自身を除く): 37417194

約数列:

[1, 2, 3, 6, 9, 11, 17, 18, 19, 22, 27, 33, 34, 38, 51, 54, 57, 66, 99, 102, 113, 114, 153, 171, 187, 198, 209, 226, 297, 306, 323, 339, 342, 374, 418, 459, 513, 561, 594, 627, 646, 678, 918, 969, 1017, 1026, 1122, 1243, 1254, 1683, 1881, 1921, 1938, 2034, 2147, 2486, 2907, 3051, 3366, 3553, 3729, 3762, 3842, 4294, 5049, 5643, 5763, 5814, 6102, 6441, 7106, 7458, 8721, 10098, 10659, 11187, 11286, 11526, 12882, 17289, 17442, 19323, 21131, 21318, 22374, 23617, 31977, 33561, 34578, 36499, 38646, 42262, 47234, 51867, 57969, 63393, 63954, 67122, 70851, 72998, 95931, 103734, 109497, 115938, 126786, 141702, 190179, 191862, 212553, 218994, 328491, 380358, 401489, 425106, 570537, 637659, 656982, 802978, 985473, 1141074, 1204467, 1275318, 1970946, 2408934, 3613401, 7226802, 10840203, 21680406]

約数ペア:

[(1, 21680406), (2, 10840203), (3, 7226802), (6, 3613401), (9, 2408934), (11, 1970946), (17, 1275318), (18, 1204467), (19, 1141074), (22, 985473), (27, 802978), (33, 656982), (34, 637659), (38, 570537), (51, 425106), (54, 401489), (57, 380358), (66, 328491), (99, 218994), (102, 212553), (113, 191862), (114, 190179), (153, 141702), (171, 126786), (187, 115938), (198, 109497), (209, 103734), (226, 95931), (297, 72998), (306, 70851), (323, 67122), (339, 63954), (342, 63393), (374, 57969), (418, 51867), (459, 47234), (513, 42262), (561, 38646), (594, 36499), (627, 34578), (646, 33561), (678, 31977), (918, 23617), (969, 22374), (1017, 21318), (1026, 21131), (1122, 19323), (1243, 17442), (1254, 17289), (1683, 12882), (1881, 11526), (1921, 11286), (1938, 11187), (2034, 10659), (2147, 10098), (2486, 8721), (2907, 7458), (3051, 7106), (3366, 6441), (3553, 6102), (3729, 5814), (3762, 5763), (3842, 5643), (4294, 5049)]