20776490

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{389}}^1$

素因数の和:519

約数の個数: 48

約数和(自身を含む): 44015400

約数和(自身を除く): 23238910

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 109, 218, 245, 389, 490, 545, 763, 778, 1090, 1526, 1945, 2723, 3815, 3890, 5341, 5446, 7630, 10682, 13615, 19061, 26705, 27230, 38122, 42401, 53410, 84802, 95305, 190610, 212005, 296807, 424010, 593614, 1484035, 2077649, 2968070, 4155298, 10388245, 20776490]

約数ペア:

[(1, 20776490), (2, 10388245), (5, 4155298), (7, 2968070), (10, 2077649), (14, 1484035), (35, 593614), (49, 424010), (70, 296807), (98, 212005), (109, 190610), (218, 95305), (245, 84802), (389, 53410), (490, 42401), (545, 38122), (763, 27230), (778, 26705), (1090, 19061), (1526, 13615), (1945, 10682), (2723, 7630), (3815, 5446), (3890, 5341)]