149899720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{87151}}^1$

素因数の和:87205

約数の個数: 32

約数和(自身を含む): 345121920

約数和(自身を除く): 195222200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 87151, 174302, 348604, 435755, 697208, 871510, 1743020, 3486040, 3747493, 7494986, 14989972, 18737465, 29979944, 37474930, 74949860, 149899720]

約数ペア:

[(1, 149899720), (2, 74949860), (4, 37474930), (5, 29979944), (8, 18737465), (10, 14989972), (20, 7494986), (40, 3747493), (43, 3486040), (86, 1743020), (172, 871510), (215, 697208), (344, 435755), (430, 348604), (860, 174302), (1720, 87151)]