19815138

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:157

約数の個数: 128

約数和(自身を含む): 55296000

約数和(自身を除く): 35480862

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 19, 21, 27, 31, 38, 42, 54, 57, 62, 63, 89, 93, 114, 126, 133, 171, 178, 186, 189, 217, 266, 267, 279, 342, 378, 399, 434, 513, 534, 558, 589, 623, 651, 798, 801, 837, 1026, 1178, 1197, 1246, 1302, 1602, 1674, 1691, 1767, 1869, 1953, 2394, 2403, 2759, 3382, 3534, 3591, 3738, 3906, 4123, 4806, 5073, 5301, 5518, 5607, 5859, 7182, 8246, 8277, 10146, 10602, 11214, 11718, 11837, 12369, 15219, 15903, 16554, 16821, 19313, 23674, 24738, 24831, 30438, 31806, 33642, 35511, 37107, 38626, 45657, 49662, 52421, 57939, 71022, 74214, 74493, 91314, 104842, 106533, 111321, 115878, 148986, 157263, 173817, 213066, 222642, 314526, 319599, 347634, 366947, 471789, 521451, 639198, 733894, 943578, 1042902, 1100841, 1415367, 2201682, 2830734, 3302523, 6605046, 9907569, 19815138]

約数ペア:

[(1, 19815138), (2, 9907569), (3, 6605046), (6, 3302523), (7, 2830734), (9, 2201682), (14, 1415367), (18, 1100841), (19, 1042902), (21, 943578), (27, 733894), (31, 639198), (38, 521451), (42, 471789), (54, 366947), (57, 347634), (62, 319599), (63, 314526), (89, 222642), (93, 213066), (114, 173817), (126, 157263), (133, 148986), (171, 115878), (178, 111321), (186, 106533), (189, 104842), (217, 91314), (266, 74493), (267, 74214), (279, 71022), (342, 57939), (378, 52421), (399, 49662), (434, 45657), (513, 38626), (534, 37107), (558, 35511), (589, 33642), (623, 31806), (651, 30438), (798, 24831), (801, 24738), (837, 23674), (1026, 19313), (1178, 16821), (1197, 16554), (1246, 15903), (1302, 15219), (1602, 12369), (1674, 11837), (1691, 11718), (1767, 11214), (1869, 10602), (1953, 10146), (2394, 8277), (2403, 8246), (2759, 7182), (3382, 5859), (3534, 5607), (3591, 5518), (3738, 5301), (3906, 5073), (4123, 4806)]