21653559

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{911}}^1$

素因数の和:1075

約数の個数: 24

約数和(自身を含む): 33196800

約数和(自身を除く): 11543241

約数列:

[1, 3, 9, 19, 57, 139, 171, 417, 911, 1251, 2641, 2733, 7923, 8199, 17309, 23769, 51927, 126629, 155781, 379887, 1139661, 2405951, 7217853, 21653559]

約数ペア:

[(1, 21653559), (3, 7217853), (9, 2405951), (19, 1139661), (57, 379887), (139, 155781), (171, 126629), (417, 51927), (911, 23769), (1251, 17309), (2641, 8199), (2733, 7923)]