21992215

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{33071}}^1$

素因数の和:33102

約数の個数: 16

約数和(自身を含む): 31749120

約数和(自身を除く): 9756905

約数列:

[1, 5, 7, 19, 35, 95, 133, 665, 33071, 165355, 231497, 628349, 1157485, 3141745, 4398443, 21992215]

約数ペア:

[(1, 21992215), (5, 4398443), (7, 3141745), (19, 1157485), (35, 628349), (95, 231497), (133, 165355), (665, 33071)]