399760

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1$

素因数の和:295

約数の個数: 40

約数和(自身を含む): 982080

約数和(自身を除く): 582320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 263, 304, 380, 526, 760, 1052, 1315, 1520, 2104, 2630, 4208, 4997, 5260, 9994, 10520, 19988, 21040, 24985, 39976, 49970, 79952, 99940, 199880, 399760]

約数ペア:

[(1, 399760), (2, 199880), (4, 99940), (5, 79952), (8, 49970), (10, 39976), (16, 24985), (19, 21040), (20, 19988), (38, 10520), (40, 9994), (76, 5260), (80, 4997), (95, 4208), (152, 2630), (190, 2104), (263, 1520), (304, 1315), (380, 1052), (526, 760)]