20916885

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{7457}}^1$

素因数の和:7493

約数の個数: 32

約数和(自身を含む): 38662272

約数和(自身を除く): 17745387

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 165, 187, 255, 561, 935, 2805, 7457, 22371, 37285, 82027, 111855, 126769, 246081, 380307, 410135, 633845, 1230405, 1394459, 1901535, 4183377, 6972295, 20916885]

約数ペア:

[(1, 20916885), (3, 6972295), (5, 4183377), (11, 1901535), (15, 1394459), (17, 1230405), (33, 633845), (51, 410135), (55, 380307), (85, 246081), (165, 126769), (187, 111855), (255, 82027), (561, 37285), (935, 22371), (2805, 7457)]