21420077

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{191}}^1\times {\mathrm{433}}^1$

素因数の和:668

約数の個数: 16

約数和(自身を含む): 25331712

約数和(自身を除く): 3911635

約数列:

[1, 7, 37, 191, 259, 433, 1337, 3031, 7067, 16021, 49469, 82703, 112147, 578921, 3060011, 21420077]

約数ペア:

[(1, 21420077), (7, 3060011), (37, 578921), (191, 112147), (259, 82703), (433, 49469), (1337, 16021), (3031, 7067)]