19854040

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{3623}}^1$

素因数の和:3771

約数の個数: 32

約数和(自身を含む): 45010080

約数和(自身を除く): 25156040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 3623, 5480, 7246, 14492, 18115, 28984, 36230, 72460, 144920, 496351, 992702, 1985404, 2481755, 3970808, 4963510, 9927020, 19854040]

約数ペア:

[(1, 19854040), (2, 9927020), (4, 4963510), (5, 3970808), (8, 2481755), (10, 1985404), (20, 992702), (40, 496351), (137, 144920), (274, 72460), (548, 36230), (685, 28984), (1096, 18115), (1370, 14492), (2740, 7246), (3623, 5480)]