21339911

素因数分解:

${\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{157}}^1$

素因数の和:338

約数の個数: 16

約数和(自身を含む): 22941600

約数和(自身を除く): 1601689

約数列:

[1, 29, 43, 109, 157, 1247, 3161, 4553, 4687, 6751, 17113, 135923, 195779, 496277, 735859, 21339911]

約数ペア:

[(1, 21339911), (29, 735859), (43, 496277), (109, 195779), (157, 135923), (1247, 17113), (3161, 6751), (4553, 4687)]