21221805

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{3137}}^1$

素因数の和:3197

約数の個数: 32

約数和(自身を含む): 37957248

約数和(自身を除く): 16735443

約数列:

[1, 3, 5, 11, 15, 33, 41, 55, 123, 165, 205, 451, 615, 1353, 2255, 3137, 6765, 9411, 15685, 34507, 47055, 103521, 128617, 172535, 385851, 517605, 643085, 1414787, 1929255, 4244361, 7073935, 21221805]

約数ペア:

[(1, 21221805), (3, 7073935), (5, 4244361), (11, 1929255), (15, 1414787), (33, 643085), (41, 517605), (55, 385851), (123, 172535), (165, 128617), (205, 103521), (451, 47055), (615, 34507), (1353, 15685), (2255, 9411), (3137, 6765)]