77543920

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{10891}}^1$

素因数の和:10993

約数の個数: 40

約数和(自身を含む): 182332080

約数和(自身を除く): 104788160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 10891, 21782, 43564, 54455, 87128, 108910, 174256, 217820, 435640, 871280, 969299, 1938598, 3877196, 4846495, 7754392, 9692990, 15508784, 19385980, 38771960, 77543920]

約数ペア:

[(1, 77543920), (2, 38771960), (4, 19385980), (5, 15508784), (8, 9692990), (10, 7754392), (16, 4846495), (20, 3877196), (40, 1938598), (80, 969299), (89, 871280), (178, 435640), (356, 217820), (445, 174256), (712, 108910), (890, 87128), (1424, 54455), (1780, 43564), (3560, 21782), (7120, 10891)]