21487544

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{673}}^1$

素因数の和:999

約数の個数: 32

約数和(自身を含む): 43594320

約数和(自身を除く): 22106776

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 307, 614, 673, 1228, 1346, 2456, 2692, 3991, 5384, 7982, 8749, 15964, 17498, 31928, 34996, 69992, 206611, 413222, 826444, 1652888, 2685943, 5371886, 10743772, 21487544]

約数ペア:

[(1, 21487544), (2, 10743772), (4, 5371886), (8, 2685943), (13, 1652888), (26, 826444), (52, 413222), (104, 206611), (307, 69992), (614, 34996), (673, 31928), (1228, 17498), (1346, 15964), (2456, 8749), (2692, 7982), (3991, 5384)]