19890970

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{857}}^1$

素因数の和:1086

約数の個数: 32

約数和(自身を含む): 39289536

約数和(自身を除く): 19398566

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 211, 422, 857, 1055, 1714, 2110, 2321, 4285, 4642, 8570, 9427, 11605, 18854, 23210, 47135, 94270, 180827, 361654, 904135, 1808270, 1989097, 3978194, 9945485, 19890970]

約数ペア:

[(1, 19890970), (2, 9945485), (5, 3978194), (10, 1989097), (11, 1808270), (22, 904135), (55, 361654), (110, 180827), (211, 94270), (422, 47135), (857, 23210), (1055, 18854), (1714, 11605), (2110, 9427), (2321, 8570), (4285, 4642)]