28721000828

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{221729}}^1$

素因数の和:221846

約数の個数: 48

約数和(自身を含む): 56322967680

約数和(自身を除く): 27601966852

約数列:

[1, 2, 4, 13, 26, 47, 52, 53, 94, 106, 188, 212, 611, 689, 1222, 1378, 2444, 2491, 2756, 4982, 9964, 32383, 64766, 129532, 221729, 443458, 886916, 2882477, 5764954, 10421263, 11529908, 11751637, 20842526, 23503274, 41685052, 47006548, 135476419, 152771281, 270952838, 305542562, 541905676, 552326939, 611085124, 1104653878, 2209307756, 7180250207, 14360500414, 28721000828]

約数ペア:

[(1, 28721000828), (2, 14360500414), (4, 7180250207), (13, 2209307756), (26, 1104653878), (47, 611085124), (52, 552326939), (53, 541905676), (94, 305542562), (106, 270952838), (188, 152771281), (212, 135476419), (611, 47006548), (689, 41685052), (1222, 23503274), (1378, 20842526), (2444, 11751637), (2491, 11529908), (2756, 10421263), (4982, 5764954), (9964, 2882477), (32383, 886916), (64766, 443458), (129532, 221729)]