19980346323

素因数分解:

$3^1\times 7^1\times {\mathrm{6997}}^1\times {\mathrm{135979}}^1$

素因数の和:142986

約数の個数: 16

約数和(自身を含む): 30450817280

約数和(自身を除く): 10470470957

約数列:

[1, 3, 7, 21, 6997, 20991, 48979, 135979, 146937, 407937, 951853, 2855559, 951445063, 2854335189, 6660115441, 19980346323]

約数ペア:

[(1, 19980346323), (3, 6660115441), (7, 2854335189), (21, 951445063), (6997, 2855559), (20991, 951853), (48979, 407937), (135979, 146937)]