21409443

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{12721}}^1$

素因数の和:12755

約数の個数: 24

約数和(自身を含む): 35723376

約数和(自身を除く): 14313933

約数列:

[1, 3, 9, 11, 17, 33, 51, 99, 153, 187, 561, 1683, 12721, 38163, 114489, 139931, 216257, 419793, 648771, 1259379, 1946313, 2378827, 7136481, 21409443]

約数ペア:

[(1, 21409443), (3, 7136481), (9, 2378827), (11, 1946313), (17, 1259379), (33, 648771), (51, 419793), (99, 216257), (153, 139931), (187, 114489), (561, 38163), (1683, 12721)]