81673210

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1\times {\mathrm{1051}}^1$

素因数の和:1486

約数の個数: 32

約数和(自身を含む): 155275200

約数和(自身を除く): 73601990

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 409, 818, 1051, 2045, 2102, 4090, 5255, 7771, 10510, 15542, 19969, 38855, 39938, 77710, 99845, 199690, 429859, 859718, 2149295, 4298590, 8167321, 16334642, 40836605, 81673210]

約数ペア:

[(1, 81673210), (2, 40836605), (5, 16334642), (10, 8167321), (19, 4298590), (38, 2149295), (95, 859718), (190, 429859), (409, 199690), (818, 99845), (1051, 77710), (2045, 39938), (2102, 38855), (4090, 19969), (5255, 15542), (7771, 10510)]