21818916

素因数分解:

$2^2\times 3^3\times 7^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:84

約数の個数: 192

約数和(自身を含む): 71680000

約数和(自身を除く): 49861084

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 27, 28, 31, 36, 38, 42, 49, 54, 57, 62, 63, 76, 84, 93, 98, 108, 114, 124, 126, 133, 147, 171, 186, 189, 196, 217, 228, 252, 266, 279, 294, 342, 343, 372, 378, 399, 434, 441, 513, 532, 558, 588, 589, 651, 684, 686, 756, 798, 837, 868, 882, 931, 1026, 1029, 1116, 1178, 1197, 1302, 1323, 1372, 1519, 1596, 1674, 1764, 1767, 1862, 1953, 2052, 2058, 2356, 2394, 2604, 2646, 2793, 3038, 3087, 3348, 3534, 3591, 3724, 3906, 4116, 4123, 4557, 4788, 5292, 5301, 5586, 5859, 6076, 6174, 6517, 7068, 7182, 7812, 8246, 8379, 9114, 9261, 10602, 10633, 11172, 11718, 12348, 12369, 13034, 13671, 14364, 15903, 16492, 16758, 18228, 18522, 19551, 21204, 21266, 23436, 24738, 25137, 26068, 27342, 28861, 31806, 31899, 33516, 37044, 37107, 39102, 41013, 42532, 49476, 50274, 54684, 57722, 58653, 63612, 63798, 74214, 78204, 82026, 86583, 95697, 100548, 111321, 115444, 117306, 127596, 148428, 164052, 173166, 175959, 191394, 202027, 222642, 234612, 259749, 287091, 346332, 351918, 382788, 404054, 445284, 519498, 574182, 606081, 703836, 779247, 808108, 1038996, 1148364, 1212162, 1558494, 1818243, 2424324, 3116988, 3636486, 5454729, 7272972, 10909458, 21818916]

約数ペア:

[(1, 21818916), (2, 10909458), (3, 7272972), (4, 5454729), (6, 3636486), (7, 3116988), (9, 2424324), (12, 1818243), (14, 1558494), (18, 1212162), (19, 1148364), (21, 1038996), (27, 808108), (28, 779247), (31, 703836), (36, 606081), (38, 574182), (42, 519498), (49, 445284), (54, 404054), (57, 382788), (62, 351918), (63, 346332), (76, 287091), (84, 259749), (93, 234612), (98, 222642), (108, 202027), (114, 191394), (124, 175959), (126, 173166), (133, 164052), (147, 148428), (171, 127596), (186, 117306), (189, 115444), (196, 111321), (217, 100548), (228, 95697), (252, 86583), (266, 82026), (279, 78204), (294, 74214), (342, 63798), (343, 63612), (372, 58653), (378, 57722), (399, 54684), (434, 50274), (441, 49476), (513, 42532), (532, 41013), (558, 39102), (588, 37107), (589, 37044), (651, 33516), (684, 31899), (686, 31806), (756, 28861), (798, 27342), (837, 26068), (868, 25137), (882, 24738), (931, 23436), (1026, 21266), (1029, 21204), (1116, 19551), (1178, 18522), (1197, 18228), (1302, 16758), (1323, 16492), (1372, 15903), (1519, 14364), (1596, 13671), (1674, 13034), (1764, 12369), (1767, 12348), (1862, 11718), (1953, 11172), (2052, 10633), (2058, 10602), (2356, 9261), (2394, 9114), (2604, 8379), (2646, 8246), (2793, 7812), (3038, 7182), (3087, 7068), (3348, 6517), (3534, 6174), (3591, 6076), (3724, 5859), (3906, 5586), (4116, 5301), (4123, 5292), (4557, 4788)]