21466291

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^2\times {\mathrm{31}}^1$

素因数の和:112

約数の個数: 48

約数和(自身を含む): 30578688

約数和(自身を除く): 9112397

約数列:

[1, 7, 11, 17, 23, 31, 77, 119, 161, 187, 217, 253, 341, 391, 527, 529, 713, 1309, 1771, 2387, 2737, 3689, 3703, 4301, 4991, 5797, 5819, 7843, 8993, 12121, 16399, 30107, 40579, 40733, 54901, 62951, 84847, 98923, 114793, 133331, 180389, 278783, 692461, 933317, 1262723, 1951481, 3066613, 21466291]

約数ペア:

[(1, 21466291), (7, 3066613), (11, 1951481), (17, 1262723), (23, 933317), (31, 692461), (77, 278783), (119, 180389), (161, 133331), (187, 114793), (217, 98923), (253, 84847), (341, 62951), (391, 54901), (527, 40733), (529, 40579), (713, 30107), (1309, 16399), (1771, 12121), (2387, 8993), (2737, 7843), (3689, 5819), (3703, 5797), (4301, 4991)]