21520002

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{1637}}^1$

素因数の和:1962

約数の個数: 32

約数和(自身を含む): 49375872

約数和(自身を除く): 27855870

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 313, 626, 939, 1637, 1878, 2191, 3274, 4382, 4911, 6573, 9822, 11459, 13146, 22918, 34377, 68754, 512381, 1024762, 1537143, 3074286, 3586667, 7173334, 10760001, 21520002]

約数ペア:

[(1, 21520002), (2, 10760001), (3, 7173334), (6, 3586667), (7, 3074286), (14, 1537143), (21, 1024762), (42, 512381), (313, 68754), (626, 34377), (939, 22918), (1637, 13146), (1878, 11459), (2191, 9822), (3274, 6573), (4382, 4911)]