390474520

素因数分解:

$2^3\times 5^1\times {\mathrm{719}}^1\times {\mathrm{13577}}^1$

素因数の和:14307

約数の個数: 32

約数和(自身を含む): 879854400

約数和(自身を除く): 489379880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 719, 1438, 2876, 3595, 5752, 7190, 13577, 14380, 27154, 28760, 54308, 67885, 108616, 135770, 271540, 543080, 9761863, 19523726, 39047452, 48809315, 78094904, 97618630, 195237260, 390474520]

約数ペア:

[(1, 390474520), (2, 195237260), (4, 97618630), (5, 78094904), (8, 48809315), (10, 39047452), (20, 19523726), (40, 9761863), (719, 543080), (1438, 271540), (2876, 135770), (3595, 108616), (5752, 67885), (7190, 54308), (13577, 28760), (14380, 27154)]