21149205

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18311}}^1$

素因数の和:18337

約数の個数: 32

約数和(自身を含む): 42190848

約数和(自身を除く): 21041643

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 231, 385, 1155, 18311, 54933, 91555, 128177, 201421, 274665, 384531, 604263, 640885, 1007105, 1409947, 1922655, 3021315, 4229841, 7049735, 21149205]

約数ペア:

[(1, 21149205), (3, 7049735), (5, 4229841), (7, 3021315), (11, 1922655), (15, 1409947), (21, 1007105), (33, 640885), (35, 604263), (55, 384531), (77, 274665), (105, 201421), (165, 128177), (231, 91555), (385, 54933), (1155, 18311)]