127981965

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{139871}}^1$

素因数の和:139940

約数の個数: 16

約数和(自身を含む): 208129536

約数和(自身を除く): 80147571

約数列:

[1, 3, 5, 15, 61, 183, 305, 915, 139871, 419613, 699355, 2098065, 8532131, 25596393, 42660655, 127981965]

約数ペア:

[(1, 127981965), (3, 42660655), (5, 25596393), (15, 8532131), (61, 2098065), (183, 699355), (305, 419613), (915, 139871)]