388204540

素因数分解:

$2^2\times 5^1\times {\mathrm{317}}^1\times {\mathrm{61231}}^1$

素因数の和:61557

約数の個数: 24

約数和(自身を含む): 817814592

約数和(自身を除く): 429610052

約数列:

[1, 2, 4, 5, 10, 20, 317, 634, 1268, 1585, 3170, 6340, 61231, 122462, 244924, 306155, 612310, 1224620, 19410227, 38820454, 77640908, 97051135, 194102270, 388204540]

約数ペア:

[(1, 388204540), (2, 194102270), (4, 97051135), (5, 77640908), (10, 38820454), (20, 19410227), (317, 1224620), (634, 612310), (1268, 306155), (1585, 244924), (3170, 122462), (6340, 61231)]