19764965

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{21139}}^1$

素因数の和:21172

約数の個数: 16

約数和(自身を含む): 27397440

約数和(自身を除く): 7632475

約数列:

[1, 5, 11, 17, 55, 85, 187, 935, 21139, 105695, 232529, 359363, 1162645, 1796815, 3952993, 19764965]

約数ペア:

[(1, 19764965), (5, 3952993), (11, 1796815), (17, 1162645), (55, 359363), (85, 232529), (187, 105695), (935, 21139)]