638615718

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{739}}^1\times {\mathrm{1231}}^1$

素因数の和:1994

約数の個数: 64

約数和(自身を含む): 1531622400

約数和(自身を除く): 893006682

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 117, 234, 351, 702, 739, 1231, 1478, 2217, 2462, 3693, 4434, 6651, 7386, 9607, 11079, 13302, 16003, 19214, 19953, 22158, 28821, 32006, 33237, 39906, 48009, 57642, 66474, 86463, 96018, 144027, 172926, 259389, 288054, 432081, 518778, 864162, 909709, 1819418, 2729127, 5458254, 8187381, 11826217, 16374762, 23652434, 24562143, 35478651, 49124286, 70957302, 106435953, 212871906, 319307859, 638615718]

約数ペア:

[(1, 638615718), (2, 319307859), (3, 212871906), (6, 106435953), (9, 70957302), (13, 49124286), (18, 35478651), (26, 24562143), (27, 23652434), (39, 16374762), (54, 11826217), (78, 8187381), (117, 5458254), (234, 2729127), (351, 1819418), (702, 909709), (739, 864162), (1231, 518778), (1478, 432081), (2217, 288054), (2462, 259389), (3693, 172926), (4434, 144027), (6651, 96018), (7386, 86463), (9607, 66474), (11079, 57642), (13302, 48009), (16003, 39906), (19214, 33237), (19953, 32006), (22158, 28821)]