155278840

素因数分解:

$2^3\times 5^1\times {\mathrm{521}}^1\times {\mathrm{7451}}^1$

素因数の和:7983

約数の個数: 32

約数和(自身を含む): 350094960

約数和(自身を除く): 194816120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 521, 1042, 2084, 2605, 4168, 5210, 7451, 10420, 14902, 20840, 29804, 37255, 59608, 74510, 149020, 298040, 3881971, 7763942, 15527884, 19409855, 31055768, 38819710, 77639420, 155278840]

約数ペア:

[(1, 155278840), (2, 77639420), (4, 38819710), (5, 31055768), (8, 19409855), (10, 15527884), (20, 7763942), (40, 3881971), (521, 298040), (1042, 149020), (2084, 74510), (2605, 59608), (4168, 37255), (5210, 29804), (7451, 20840), (10420, 14902)]