87961321

素因数分解:

$7^3\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:326

約数の個数: 32

約数和(自身を含む): 109440000

約数和(自身を除く): 21478679

約数列:

[1, 7, 29, 37, 49, 203, 239, 259, 343, 1073, 1421, 1673, 1813, 6931, 7511, 8843, 9947, 11711, 12691, 48517, 52577, 61901, 81977, 256447, 339619, 368039, 433307, 1795129, 2377333, 3033149, 12565903, 87961321]

約数ペア:

[(1, 87961321), (7, 12565903), (29, 3033149), (37, 2377333), (49, 1795129), (203, 433307), (239, 368039), (259, 339619), (343, 256447), (1073, 81977), (1421, 61901), (1673, 52577), (1813, 48517), (6931, 12691), (7511, 11711), (8843, 9947)]