19902078

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1423}}^1$

素因数の和:1478

約数の個数: 64

約数和(自身を含む): 51947520

約数和(自身を除く): 32045442

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 37, 42, 54, 63, 74, 111, 126, 189, 222, 259, 333, 378, 518, 666, 777, 999, 1423, 1554, 1998, 2331, 2846, 4269, 4662, 6993, 8538, 9961, 12807, 13986, 19922, 25614, 29883, 38421, 52651, 59766, 76842, 89649, 105302, 157953, 179298, 268947, 315906, 368557, 473859, 537894, 737114, 947718, 1105671, 1421577, 2211342, 2843154, 3317013, 6634026, 9951039, 19902078]

約数ペア:

[(1, 19902078), (2, 9951039), (3, 6634026), (6, 3317013), (7, 2843154), (9, 2211342), (14, 1421577), (18, 1105671), (21, 947718), (27, 737114), (37, 537894), (42, 473859), (54, 368557), (63, 315906), (74, 268947), (111, 179298), (126, 157953), (189, 105302), (222, 89649), (259, 76842), (333, 59766), (378, 52651), (518, 38421), (666, 29883), (777, 25614), (999, 19922), (1423, 13986), (1554, 12807), (1998, 9961), (2331, 8538), (2846, 6993), (4269, 4662)]