201521999

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{7933}}^1$

素因数の和:8150

約数の個数: 16

約数和(自身を含む): 243732480

約数和(自身を除く): 42210481

約数列:

[1, 7, 19, 133, 191, 1337, 3629, 7933, 25403, 55531, 150727, 1055089, 1515203, 10606421, 28788857, 201521999]

約数ペア:

[(1, 201521999), (7, 28788857), (19, 10606421), (133, 1515203), (191, 1055089), (1337, 150727), (3629, 55531), (7933, 25403)]