208049715

素因数分解:

$3^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{1423}}^1$

素因数の和:1478

約数の個数: 60

約数和(自身を含む): 393886944

約数和(自身を除く): 185837229

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 95, 135, 171, 285, 361, 405, 513, 855, 1083, 1423, 1539, 1805, 2565, 3249, 4269, 5415, 7115, 7695, 9747, 12807, 16245, 21345, 27037, 29241, 38421, 48735, 64035, 81111, 115263, 135185, 146205, 192105, 243333, 405555, 513703, 576315, 729999, 1216665, 1541109, 2189997, 2568515, 3649995, 4623327, 7705545, 10949985, 13869981, 23116635, 41609943, 69349905, 208049715]

約数ペア:

[(1, 208049715), (3, 69349905), (5, 41609943), (9, 23116635), (15, 13869981), (19, 10949985), (27, 7705545), (45, 4623327), (57, 3649995), (81, 2568515), (95, 2189997), (135, 1541109), (171, 1216665), (285, 729999), (361, 576315), (405, 513703), (513, 405555), (855, 243333), (1083, 192105), (1423, 146205), (1539, 135185), (1805, 115263), (2565, 81111), (3249, 64035), (4269, 48735), (5415, 38421), (7115, 29241), (7695, 27037), (9747, 21345), (12807, 16245)]