80957680

素因数分解:

$2^4\times 5^1\times {\mathrm{181}}^1\times {\mathrm{5591}}^1$

素因数の和:5785

約数の個数: 40

約数和(自身を含む): 189300384

約数和(自身を除く): 108342704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 181, 362, 724, 905, 1448, 1810, 2896, 3620, 5591, 7240, 11182, 14480, 22364, 27955, 44728, 55910, 89456, 111820, 223640, 447280, 1011971, 2023942, 4047884, 5059855, 8095768, 10119710, 16191536, 20239420, 40478840, 80957680]

約数ペア:

[(1, 80957680), (2, 40478840), (4, 20239420), (5, 16191536), (8, 10119710), (10, 8095768), (16, 5059855), (20, 4047884), (40, 2023942), (80, 1011971), (181, 447280), (362, 223640), (724, 111820), (905, 89456), (1448, 55910), (1810, 44728), (2896, 27955), (3620, 22364), (5591, 14480), (7240, 11182)]