28511680

素因数分解:

$2^6\times 5^1\times {\mathrm{139}}^1\times {\mathrm{641}}^1$

素因数の和:797

約数の個数: 56

約数和(自身を含む): 68488560

約数和(自身を除く): 39976880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 139, 160, 278, 320, 556, 641, 695, 1112, 1282, 1390, 2224, 2564, 2780, 3205, 4448, 5128, 5560, 6410, 8896, 10256, 11120, 12820, 20512, 22240, 25640, 41024, 44480, 51280, 89099, 102560, 178198, 205120, 356396, 445495, 712792, 890990, 1425584, 1781980, 2851168, 3563960, 5702336, 7127920, 14255840, 28511680]

約数ペア:

[(1, 28511680), (2, 14255840), (4, 7127920), (5, 5702336), (8, 3563960), (10, 2851168), (16, 1781980), (20, 1425584), (32, 890990), (40, 712792), (64, 445495), (80, 356396), (139, 205120), (160, 178198), (278, 102560), (320, 89099), (556, 51280), (641, 44480), (695, 41024), (1112, 25640), (1282, 22240), (1390, 20512), (2224, 12820), (2564, 11120), (2780, 10256), (3205, 8896), (4448, 6410), (5128, 5560)]