19810010

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{2467}}^1$

素因数の和:2558

約数の個数: 32

約数和(自身を含む): 39448512

約数和(自身を除く): 19638502

約数列:

[1, 2, 5, 10, 11, 22, 55, 73, 110, 146, 365, 730, 803, 1606, 2467, 4015, 4934, 8030, 12335, 24670, 27137, 54274, 135685, 180091, 271370, 360182, 900455, 1800910, 1981001, 3962002, 9905005, 19810010]

約数ペア:

[(1, 19810010), (2, 9905005), (5, 3962002), (10, 1981001), (11, 1800910), (22, 900455), (55, 360182), (73, 271370), (110, 180091), (146, 135685), (365, 54274), (730, 27137), (803, 24670), (1606, 12335), (2467, 8030), (4015, 4934)]