208328679

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{43}}^2\times {\mathrm{107}}^1$

素因数の和:218

約数の個数: 60

約数和(自身を含む): 346328136

約数和(自身を除く): 137999457

約数列:

[1, 3, 9, 13, 27, 39, 43, 81, 107, 117, 129, 321, 351, 387, 559, 963, 1053, 1161, 1391, 1677, 1849, 2889, 3483, 4173, 4601, 5031, 5547, 8667, 12519, 13803, 15093, 16641, 24037, 37557, 41409, 45279, 49923, 59813, 72111, 112671, 124227, 149769, 179439, 197843, 216333, 372681, 538317, 593529, 648999, 1614951, 1780587, 1946997, 2571959, 4844853, 5341761, 7715877, 16025283, 23147631, 69442893, 208328679]

約数ペア:

[(1, 208328679), (3, 69442893), (9, 23147631), (13, 16025283), (27, 7715877), (39, 5341761), (43, 4844853), (81, 2571959), (107, 1946997), (117, 1780587), (129, 1614951), (321, 648999), (351, 593529), (387, 538317), (559, 372681), (963, 216333), (1053, 197843), (1161, 179439), (1391, 149769), (1677, 124227), (1849, 112671), (2889, 72111), (3483, 59813), (4173, 49923), (4601, 45279), (5031, 41409), (5547, 37557), (8667, 24037), (12519, 16641), (13803, 15093)]