7788140

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2389}}^1$

素因数の和:2561

約数の個数: 24

約数和(自身を含む): 16462320

約数和(自身を除く): 8674180

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 2389, 3260, 4778, 9556, 11945, 23890, 47780, 389407, 778814, 1557628, 1947035, 3894070, 7788140]

約数ペア:

[(1, 7788140), (2, 3894070), (4, 1947035), (5, 1557628), (10, 778814), (20, 389407), (163, 47780), (326, 23890), (652, 11945), (815, 9556), (1630, 4778), (2389, 3260)]