20515984

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{16231}}^1$

素因数の和:16318

約数の個数: 20

約数和(自身を含む): 40255360

約数和(自身を除く): 19739376

約数列:

[1, 2, 4, 8, 16, 79, 158, 316, 632, 1264, 16231, 32462, 64924, 129848, 259696, 1282249, 2564498, 5128996, 10257992, 20515984]

約数ペア:

[(1, 20515984), (2, 10257992), (4, 5128996), (8, 2564498), (16, 1282249), (79, 259696), (158, 129848), (316, 64924), (632, 32462), (1264, 16231)]