291229520

素因数分解:

$2^4\times 5^1\times {\mathrm{3640369}}^1$

素因数の和:3640382

約数の個数: 20

約数和(自身を含む): 677108820

約数和(自身を除く): 385879300

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3640369, 7280738, 14561476, 18201845, 29122952, 36403690, 58245904, 72807380, 145614760, 291229520]

約数ペア:

[(1, 291229520), (2, 145614760), (4, 72807380), (5, 58245904), (8, 36403690), (10, 29122952), (16, 18201845), (20, 14561476), (40, 7280738), (80, 3640369)]