21205562

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{641}}^1$

素因数の和:806

約数の個数: 32

約数和(自身を含む): 38828160

約数和(自身を除く): 17622598

約数列:

[1, 2, 7, 14, 17, 34, 119, 139, 238, 278, 641, 973, 1282, 1946, 2363, 4487, 4726, 8974, 10897, 16541, 21794, 33082, 76279, 89099, 152558, 178198, 623693, 1247386, 1514683, 3029366, 10602781, 21205562]

約数ペア:

[(1, 21205562), (2, 10602781), (7, 3029366), (14, 1514683), (17, 1247386), (34, 623693), (119, 178198), (139, 152558), (238, 89099), (278, 76279), (641, 33082), (973, 21794), (1282, 16541), (1946, 10897), (2363, 8974), (4487, 4726)]