20805722

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1$

素因数の和:195

約数の個数: 64

約数和(自身を含む): 41057280

約数和(自身を除く): 20251558

約数列:

[1, 2, 7, 14, 17, 19, 34, 38, 43, 86, 107, 119, 133, 214, 238, 266, 301, 323, 602, 646, 731, 749, 817, 1462, 1498, 1634, 1819, 2033, 2261, 3638, 4066, 4522, 4601, 5117, 5719, 9202, 10234, 11438, 12733, 13889, 14231, 25466, 27778, 28462, 32207, 34561, 64414, 69122, 78217, 87419, 97223, 156434, 174838, 194446, 241927, 483854, 547519, 611933, 1095038, 1223866, 1486123, 2972246, 10402861, 20805722]

約数ペア:

[(1, 20805722), (2, 10402861), (7, 2972246), (14, 1486123), (17, 1223866), (19, 1095038), (34, 611933), (38, 547519), (43, 483854), (86, 241927), (107, 194446), (119, 174838), (133, 156434), (214, 97223), (238, 87419), (266, 78217), (301, 69122), (323, 64414), (602, 34561), (646, 32207), (731, 28462), (749, 27778), (817, 25466), (1462, 14231), (1498, 13889), (1634, 12733), (1819, 11438), (2033, 10234), (2261, 9202), (3638, 5719), (4066, 5117), (4522, 4601)]