20804889

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{577}}^1$

素因数の和:705

約数の個数: 32

約数和(自身を含む): 33958656

約数和(自身を除く): 13153767

約数列:

[1, 3, 7, 17, 21, 51, 101, 119, 303, 357, 577, 707, 1717, 1731, 2121, 4039, 5151, 9809, 12019, 12117, 29427, 36057, 58277, 68663, 174831, 205989, 407939, 990709, 1223817, 2972127, 6934963, 20804889]

約数ペア:

[(1, 20804889), (3, 6934963), (7, 2972127), (17, 1223817), (21, 990709), (51, 407939), (101, 205989), (119, 174831), (303, 68663), (357, 58277), (577, 36057), (707, 29427), (1717, 12117), (1731, 12019), (2121, 9809), (4039, 5151)]