661365768

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{191}}^1\times {\mathrm{20611}}^1$

素因数の和:20818

約数の個数: 64

約数和(自身を含む): 1899601920

約数和(自身を除く): 1238236152

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 191, 382, 573, 764, 1146, 1337, 1528, 2292, 2674, 4011, 4584, 5348, 8022, 10696, 16044, 20611, 32088, 41222, 61833, 82444, 123666, 144277, 164888, 247332, 288554, 432831, 494664, 577108, 865662, 1154216, 1731324, 3462648, 3936701, 7873402, 11810103, 15746804, 23620206, 27556907, 31493608, 47240412, 55113814, 82670721, 94480824, 110227628, 165341442, 220455256, 330682884, 661365768]

約数ペア:

[(1, 661365768), (2, 330682884), (3, 220455256), (4, 165341442), (6, 110227628), (7, 94480824), (8, 82670721), (12, 55113814), (14, 47240412), (21, 31493608), (24, 27556907), (28, 23620206), (42, 15746804), (56, 11810103), (84, 7873402), (168, 3936701), (191, 3462648), (382, 1731324), (573, 1154216), (764, 865662), (1146, 577108), (1337, 494664), (1528, 432831), (2292, 288554), (2674, 247332), (4011, 164888), (4584, 144277), (5348, 123666), (8022, 82444), (10696, 61833), (16044, 41222), (20611, 32088)]