2564680

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{661}}^1$

素因数の和:769

約数の個数: 32

約数和(自身を含む): 5838840

約数和(自身を除く): 3274160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 661, 776, 970, 1322, 1940, 2644, 3305, 3880, 5288, 6610, 13220, 26440, 64117, 128234, 256468, 320585, 512936, 641170, 1282340, 2564680]

約数ペア:

[(1, 2564680), (2, 1282340), (4, 641170), (5, 512936), (8, 320585), (10, 256468), (20, 128234), (40, 64117), (97, 26440), (194, 13220), (388, 6610), (485, 5288), (661, 3880), (776, 3305), (970, 2644), (1322, 1940)]