2109978

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1$

素因数の和:219

約数の個数: 48

約数和(自身を含む): 5031936

約数和(自身を除く): 2921958

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 71, 78, 117, 127, 142, 213, 234, 254, 381, 426, 639, 762, 923, 1143, 1278, 1651, 1846, 2286, 2769, 3302, 4953, 5538, 8307, 9017, 9906, 14859, 16614, 18034, 27051, 29718, 54102, 81153, 117221, 162306, 234442, 351663, 703326, 1054989, 2109978]

約数ペア:

[(1, 2109978), (2, 1054989), (3, 703326), (6, 351663), (9, 234442), (13, 162306), (18, 117221), (26, 81153), (39, 54102), (71, 29718), (78, 27051), (117, 18034), (127, 16614), (142, 14859), (213, 9906), (234, 9017), (254, 8307), (381, 5538), (426, 4953), (639, 3302), (762, 2769), (923, 2286), (1143, 1846), (1278, 1651)]