128965960

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1\times {\mathrm{479}}^1$

素因数の和:670

約数の個数: 64

約数和(自身を含む): 298598400

約数和(自身を除く): 169632440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 127, 212, 254, 265, 424, 479, 508, 530, 635, 958, 1016, 1060, 1270, 1916, 2120, 2395, 2540, 3832, 4790, 5080, 6731, 9580, 13462, 19160, 25387, 26924, 33655, 50774, 53848, 60833, 67310, 101548, 121666, 126935, 134620, 203096, 243332, 253870, 269240, 304165, 486664, 507740, 608330, 1015480, 1216660, 2433320, 3224149, 6448298, 12896596, 16120745, 25793192, 32241490, 64482980, 128965960]

約数ペア:

[(1, 128965960), (2, 64482980), (4, 32241490), (5, 25793192), (8, 16120745), (10, 12896596), (20, 6448298), (40, 3224149), (53, 2433320), (106, 1216660), (127, 1015480), (212, 608330), (254, 507740), (265, 486664), (424, 304165), (479, 269240), (508, 253870), (530, 243332), (635, 203096), (958, 134620), (1016, 126935), (1060, 121666), (1270, 101548), (1916, 67310), (2120, 60833), (2395, 53848), (2540, 50774), (3832, 33655), (4790, 26924), (5080, 25387), (6731, 19160), (9580, 13462)]