19787140

素因数分解:

$2^2\times 5^1\times {\mathrm{317}}^1\times {\mathrm{3121}}^1$

素因数の和:3447

約数の個数: 24

約数和(自身を含む): 41697432

約数和(自身を除く): 21910292

約数列:

[1, 2, 4, 5, 10, 20, 317, 634, 1268, 1585, 3121, 3170, 6242, 6340, 12484, 15605, 31210, 62420, 989357, 1978714, 3957428, 4946785, 9893570, 19787140]

約数ペア:

[(1, 19787140), (2, 9893570), (4, 4946785), (5, 3957428), (10, 1978714), (20, 989357), (317, 62420), (634, 31210), (1268, 15605), (1585, 12484), (3121, 6340), (3170, 6242)]