28720648

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{839}}^1$

素因数の和:1245

約数の個数: 32

約数和(自身を含む): 58968000

約数和(自身を除く): 30247352

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 389, 778, 839, 1556, 1678, 3112, 3356, 4279, 6712, 8558, 9229, 17116, 18458, 34232, 36916, 73832, 326371, 652742, 1305484, 2610968, 3590081, 7180162, 14360324, 28720648]

約数ペア:

[(1, 28720648), (2, 14360324), (4, 7180162), (8, 3590081), (11, 2610968), (22, 1305484), (44, 652742), (88, 326371), (389, 73832), (778, 36916), (839, 34232), (1556, 18458), (1678, 17116), (3112, 9229), (3356, 8558), (4279, 6712)]