20781670

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{557}}^1$

素因数の和:625

約数の個数: 64

約数和(自身を含む): 47246976

約数和(自身を除く): 26465306

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 41, 65, 70, 82, 91, 130, 182, 205, 287, 410, 455, 533, 557, 574, 910, 1066, 1114, 1435, 2665, 2785, 2870, 3731, 3899, 5330, 5570, 7241, 7462, 7798, 14482, 18655, 19495, 22837, 36205, 37310, 38990, 45674, 50687, 72410, 101374, 114185, 159859, 228370, 253435, 296881, 319718, 506870, 593762, 799295, 1484405, 1598590, 2078167, 2968810, 4156334, 10390835, 20781670]

約数ペア:

[(1, 20781670), (2, 10390835), (5, 4156334), (7, 2968810), (10, 2078167), (13, 1598590), (14, 1484405), (26, 799295), (35, 593762), (41, 506870), (65, 319718), (70, 296881), (82, 253435), (91, 228370), (130, 159859), (182, 114185), (205, 101374), (287, 72410), (410, 50687), (455, 45674), (533, 38990), (557, 37310), (574, 36205), (910, 22837), (1066, 19495), (1114, 18655), (1435, 14482), (2665, 7798), (2785, 7462), (2870, 7241), (3731, 5570), (3899, 5330)]