278320040

素因数分解:

$2^3\times 5^1\times {\mathrm{6958001}}^1$

素因数の和:6958012

約数の個数: 16

約数和(自身を含む): 626220180

約数和(自身を除く): 347900140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 6958001, 13916002, 27832004, 34790005, 55664008, 69580010, 139160020, 278320040]

約数ペア:

[(1, 278320040), (2, 139160020), (4, 69580010), (5, 55664008), (8, 34790005), (10, 27832004), (20, 13916002), (40, 6958001)]