19695971660

素因数分解:

$2^2\times 5^1\times {\mathrm{1997}}^1\times {\mathrm{493139}}^1$

素因数の和:495145

約数の個数: 24

約数和(自身を含む): 41382336240

約数和(自身を除く): 21686364580

約数列:

[1, 2, 4, 5, 10, 20, 1997, 3994, 7988, 9985, 19970, 39940, 493139, 986278, 1972556, 2465695, 4931390, 9862780, 984798583, 1969597166, 3939194332, 4923992915, 9847985830, 19695971660]

約数ペア:

[(1, 19695971660), (2, 9847985830), (4, 4923992915), (5, 3939194332), (10, 1969597166), (20, 984798583), (1997, 9862780), (3994, 4931390), (7988, 2465695), (9985, 1972556), (19970, 986278), (39940, 493139)]