28041340

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{677}}^1$

素因数の和:814

約数の個数: 48

約数和(自身を含む): 62647200

約数和(自身を除く): 34605860

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 109, 190, 218, 380, 436, 545, 677, 1090, 1354, 2071, 2180, 2708, 3385, 4142, 6770, 8284, 10355, 12863, 13540, 20710, 25726, 41420, 51452, 64315, 73793, 128630, 147586, 257260, 295172, 368965, 737930, 1402067, 1475860, 2804134, 5608268, 7010335, 14020670, 28041340]

約数ペア:

[(1, 28041340), (2, 14020670), (4, 7010335), (5, 5608268), (10, 2804134), (19, 1475860), (20, 1402067), (38, 737930), (76, 368965), (95, 295172), (109, 257260), (190, 147586), (218, 128630), (380, 73793), (436, 64315), (545, 51452), (677, 41420), (1090, 25726), (1354, 20710), (2071, 13540), (2180, 12863), (2708, 10355), (3385, 8284), (4142, 6770)]