21355978

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{1471}}^1$

素因数の和:1558

約数の個数: 32

約数和(自身を含む): 39426048

約数和(自身を除く): 18070070

約数列:

[1, 2, 7, 14, 17, 34, 61, 119, 122, 238, 427, 854, 1037, 1471, 2074, 2942, 7259, 10297, 14518, 20594, 25007, 50014, 89731, 175049, 179462, 350098, 628117, 1256234, 1525427, 3050854, 10677989, 21355978]

約数ペア:

[(1, 21355978), (2, 10677989), (7, 3050854), (14, 1525427), (17, 1256234), (34, 628117), (61, 350098), (119, 179462), (122, 175049), (238, 89731), (427, 50014), (854, 25007), (1037, 20594), (1471, 14518), (2074, 10297), (2942, 7259)]