21900078

素因数分解:

$2^1\times 3^3\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1$

素因数の和:258

約数の個数: 64

約数和(自身を含む): 50944320

約数和(自身を除く): 29044242

約数列:

[1, 2, 3, 6, 9, 18, 27, 37, 54, 74, 97, 111, 113, 194, 222, 226, 291, 333, 339, 582, 666, 678, 873, 999, 1017, 1746, 1998, 2034, 2619, 3051, 3589, 4181, 5238, 6102, 7178, 8362, 10767, 10961, 12543, 21534, 21922, 25086, 32301, 32883, 37629, 64602, 65766, 75258, 96903, 98649, 112887, 193806, 197298, 225774, 295947, 405557, 591894, 811114, 1216671, 2433342, 3650013, 7300026, 10950039, 21900078]

約数ペア:

[(1, 21900078), (2, 10950039), (3, 7300026), (6, 3650013), (9, 2433342), (18, 1216671), (27, 811114), (37, 591894), (54, 405557), (74, 295947), (97, 225774), (111, 197298), (113, 193806), (194, 112887), (222, 98649), (226, 96903), (291, 75258), (333, 65766), (339, 64602), (582, 37629), (666, 32883), (678, 32301), (873, 25086), (999, 21922), (1017, 21534), (1746, 12543), (1998, 10961), (2034, 10767), (2619, 8362), (3051, 7178), (3589, 6102), (4181, 5238)]