9997019995

素因数分解:

$5^1\times {\mathrm{643}}^1\times {\mathrm{1451}}^1\times {\mathrm{2143}}^1$

素因数の和:4242

約数の個数: 16

約数和(自身を含む): 12028972032

約数和(自身を除く): 2031952037

約数列:

[1, 5, 643, 1451, 2143, 3215, 7255, 10715, 932993, 1377949, 3109493, 4664965, 6889745, 15547465, 1999403999, 9997019995]

約数ペア:

[(1, 9997019995), (5, 1999403999), (643, 15547465), (1451, 6889745), (2143, 4664965), (3215, 3109493), (7255, 1377949), (10715, 932993)]