21789810

素因数分解:

$2^1\times 3^6\times 5^1\times 7^2\times {\mathrm{61}}^1$

素因数の和:100

約数の個数: 168

約数和(自身を含む): 69527916

約数和(自身を除く): 47738106

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 49, 54, 61, 63, 70, 81, 90, 98, 105, 122, 126, 135, 147, 162, 183, 189, 210, 243, 245, 270, 294, 305, 315, 366, 378, 405, 427, 441, 486, 490, 549, 567, 610, 630, 729, 735, 810, 854, 882, 915, 945, 1098, 1134, 1215, 1281, 1323, 1458, 1470, 1647, 1701, 1830, 1890, 2135, 2205, 2430, 2562, 2646, 2745, 2835, 2989, 3294, 3402, 3645, 3843, 3969, 4270, 4410, 4941, 5103, 5490, 5670, 5978, 6405, 6615, 7290, 7686, 7938, 8235, 8505, 8967, 9882, 10206, 11529, 11907, 12810, 13230, 14823, 14945, 16470, 17010, 17934, 19215, 19845, 23058, 23814, 24705, 25515, 26901, 29646, 29890, 34587, 35721, 38430, 39690, 44469, 44835, 49410, 51030, 53802, 57645, 59535, 69174, 71442, 74115, 80703, 88938, 89670, 103761, 115290, 119070, 134505, 148230, 161406, 172935, 178605, 207522, 222345, 242109, 269010, 311283, 345870, 357210, 403515, 444690, 484218, 518805, 622566, 726327, 807030, 1037610, 1210545, 1452654, 1556415, 2178981, 2421090, 3112830, 3631635, 4357962, 7263270, 10894905, 21789810]

約数ペア:

[(1, 21789810), (2, 10894905), (3, 7263270), (5, 4357962), (6, 3631635), (7, 3112830), (9, 2421090), (10, 2178981), (14, 1556415), (15, 1452654), (18, 1210545), (21, 1037610), (27, 807030), (30, 726327), (35, 622566), (42, 518805), (45, 484218), (49, 444690), (54, 403515), (61, 357210), (63, 345870), (70, 311283), (81, 269010), (90, 242109), (98, 222345), (105, 207522), (122, 178605), (126, 172935), (135, 161406), (147, 148230), (162, 134505), (183, 119070), (189, 115290), (210, 103761), (243, 89670), (245, 88938), (270, 80703), (294, 74115), (305, 71442), (315, 69174), (366, 59535), (378, 57645), (405, 53802), (427, 51030), (441, 49410), (486, 44835), (490, 44469), (549, 39690), (567, 38430), (610, 35721), (630, 34587), (729, 29890), (735, 29646), (810, 26901), (854, 25515), (882, 24705), (915, 23814), (945, 23058), (1098, 19845), (1134, 19215), (1215, 17934), (1281, 17010), (1323, 16470), (1458, 14945), (1470, 14823), (1647, 13230), (1701, 12810), (1830, 11907), (1890, 11529), (2135, 10206), (2205, 9882), (2430, 8967), (2562, 8505), (2646, 8235), (2745, 7938), (2835, 7686), (2989, 7290), (3294, 6615), (3402, 6405), (3645, 5978), (3843, 5670), (3969, 5490), (4270, 5103), (4410, 4941)]