1665075440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{21391}}^1$

素因数の和:21550

約数の個数: 80

約数和(自身を含む): 4456381440

約数和(自身を除く): 2791306000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 139, 140, 278, 280, 556, 560, 695, 973, 1112, 1390, 1946, 2224, 2780, 3892, 4865, 5560, 7784, 9730, 11120, 15568, 19460, 21391, 38920, 42782, 77840, 85564, 106955, 149737, 171128, 213910, 299474, 342256, 427820, 598948, 748685, 855640, 1197896, 1497370, 1711280, 2395792, 2973349, 2994740, 5946698, 5989480, 11893396, 11978960, 14866745, 20813443, 23786792, 29733490, 41626886, 47573584, 59466980, 83253772, 104067215, 118933960, 166507544, 208134430, 237867920, 333015088, 416268860, 832537720, 1665075440]

約数ペア:

[(1, 1665075440), (2, 832537720), (4, 416268860), (5, 333015088), (7, 237867920), (8, 208134430), (10, 166507544), (14, 118933960), (16, 104067215), (20, 83253772), (28, 59466980), (35, 47573584), (40, 41626886), (56, 29733490), (70, 23786792), (80, 20813443), (112, 14866745), (139, 11978960), (140, 11893396), (278, 5989480), (280, 5946698), (556, 2994740), (560, 2973349), (695, 2395792), (973, 1711280), (1112, 1497370), (1390, 1197896), (1946, 855640), (2224, 748685), (2780, 598948), (3892, 427820), (4865, 342256), (5560, 299474), (7784, 213910), (9730, 171128), (11120, 149737), (15568, 106955), (19460, 85564), (21391, 77840), (38920, 42782)]