21257698

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{619}}^1$

素因数の和:862

約数の個数: 32

約数和(自身を含む): 39997440

約数和(自身を除く): 18739742

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 223, 446, 619, 1238, 1561, 2453, 3122, 4333, 4906, 6809, 8666, 13618, 17171, 34342, 47663, 95326, 138037, 276074, 966259, 1518407, 1932518, 3036814, 10628849, 21257698]

約数ペア:

[(1, 21257698), (2, 10628849), (7, 3036814), (11, 1932518), (14, 1518407), (22, 966259), (77, 276074), (154, 138037), (223, 95326), (446, 47663), (619, 34342), (1238, 17171), (1561, 13618), (2453, 8666), (3122, 6809), (4333, 4906)]