21905121

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{35969}}^1$

素因数の和:36008

約数の個数: 16

約数和(自身を含む): 34531200

約数和(自身を除く): 12626079

約数列:

[1, 3, 7, 21, 29, 87, 203, 609, 35969, 107907, 251783, 755349, 1043101, 3129303, 7301707, 21905121]

約数ペア:

[(1, 21905121), (3, 7301707), (7, 3129303), (21, 1043101), (29, 755349), (87, 251783), (203, 107907), (609, 35969)]