20597540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2089}}^1$

素因数の和:2144

約数の個数: 48

約数和(自身を含む): 47401200

約数和(自身を除く): 26803660

約数列:

[1, 2, 4, 5, 10, 17, 20, 29, 34, 58, 68, 85, 116, 145, 170, 290, 340, 493, 580, 986, 1972, 2089, 2465, 4178, 4930, 8356, 9860, 10445, 20890, 35513, 41780, 60581, 71026, 121162, 142052, 177565, 242324, 302905, 355130, 605810, 710260, 1029877, 1211620, 2059754, 4119508, 5149385, 10298770, 20597540]

約数ペア:

[(1, 20597540), (2, 10298770), (4, 5149385), (5, 4119508), (10, 2059754), (17, 1211620), (20, 1029877), (29, 710260), (34, 605810), (58, 355130), (68, 302905), (85, 242324), (116, 177565), (145, 142052), (170, 121162), (290, 71026), (340, 60581), (493, 41780), (580, 35513), (986, 20890), (1972, 10445), (2089, 9860), (2465, 8356), (4178, 4930)]