19720778890

素因数分解:

$2^1\times 5^1\times {\mathrm{983}}^1\times {\mathrm{2006183}}^1$

素因数の和:2007173

約数の個数: 16

約数和(自身を含む): 35533531008

約数和(自身を除く): 15812752118

約数列:

[1, 2, 5, 10, 983, 1966, 4915, 9830, 2006183, 4012366, 10030915, 20061830, 1972077889, 3944155778, 9860389445, 19720778890]

約数ペア:

[(1, 19720778890), (2, 9860389445), (5, 3944155778), (10, 1972077889), (983, 20061830), (1966, 10030915), (4915, 4012366), (9830, 2006183)]