18173504080

素因数分解:

$2^4\times 5^1\times {\mathrm{1787}}^1\times {\mathrm{127123}}^1$

素因数の和:128923

約数の個数: 40

約数和(自身を含む): 42277374432

約数和(自身を除く): 24103870352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1787, 3574, 7148, 8935, 14296, 17870, 28592, 35740, 71480, 127123, 142960, 254246, 508492, 635615, 1016984, 1271230, 2033968, 2542460, 5084920, 10169840, 227168801, 454337602, 908675204, 1135844005, 1817350408, 2271688010, 3634700816, 4543376020, 9086752040, 18173504080]

約数ペア:

[(1, 18173504080), (2, 9086752040), (4, 4543376020), (5, 3634700816), (8, 2271688010), (10, 1817350408), (16, 1135844005), (20, 908675204), (40, 454337602), (80, 227168801), (1787, 10169840), (3574, 5084920), (7148, 2542460), (8935, 2033968), (14296, 1271230), (17870, 1016984), (28592, 635615), (35740, 508492), (71480, 254246), (127123, 142960)]