80821640

素因数分解:

$2^3\times 5^1\times {\mathrm{373}}^1\times {\mathrm{5417}}^1$

素因数の和:5801

約数の個数: 32

約数和(自身を含む): 182369880

約数和(自身を除く): 101548240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 373, 746, 1492, 1865, 2984, 3730, 5417, 7460, 10834, 14920, 21668, 27085, 43336, 54170, 108340, 216680, 2020541, 4041082, 8082164, 10102705, 16164328, 20205410, 40410820, 80821640]

約数ペア:

[(1, 80821640), (2, 40410820), (4, 20205410), (5, 16164328), (8, 10102705), (10, 8082164), (20, 4041082), (40, 2020541), (373, 216680), (746, 108340), (1492, 54170), (1865, 43336), (2984, 27085), (3730, 21668), (5417, 14920), (7460, 10834)]