156728840

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{9091}}^1$

素因数の和:9533

約数の個数: 32

約数和(自身を含む): 353496960

約数和(自身を除く): 196768120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 862, 1724, 2155, 3448, 4310, 8620, 9091, 17240, 18182, 36364, 45455, 72728, 90910, 181820, 363640, 3918221, 7836442, 15672884, 19591105, 31345768, 39182210, 78364420, 156728840]

約数ペア:

[(1, 156728840), (2, 78364420), (4, 39182210), (5, 31345768), (8, 19591105), (10, 15672884), (20, 7836442), (40, 3918221), (431, 363640), (862, 181820), (1724, 90910), (2155, 72728), (3448, 45455), (4310, 36364), (8620, 18182), (9091, 17240)]