81627320

素因数分解:

$2^3\times 5^1\times {\mathrm{373}}^1\times {\mathrm{5471}}^1$

素因数の和:5855

約数の個数: 32

約数和(自身を含む): 184187520

約数和(自身を除く): 102560200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 373, 746, 1492, 1865, 2984, 3730, 5471, 7460, 10942, 14920, 21884, 27355, 43768, 54710, 109420, 218840, 2040683, 4081366, 8162732, 10203415, 16325464, 20406830, 40813660, 81627320]

約数ペア:

[(1, 81627320), (2, 40813660), (4, 20406830), (5, 16325464), (8, 10203415), (10, 8162732), (20, 4081366), (40, 2040683), (373, 218840), (746, 109420), (1492, 54710), (1865, 43768), (2984, 27355), (3730, 21884), (5471, 14920), (7460, 10942)]