18816490

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{3491}}^1$

素因数の和:3523

約数の個数: 48

約数和(自身を含む): 42993504

約数和(自身を除く): 24177014

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 49, 55, 70, 77, 98, 110, 154, 245, 385, 490, 539, 770, 1078, 2695, 3491, 5390, 6982, 17455, 24437, 34910, 38401, 48874, 76802, 122185, 171059, 192005, 244370, 268807, 342118, 384010, 537614, 855295, 1344035, 1710590, 1881649, 2688070, 3763298, 9408245, 18816490]

約数ペア:

[(1, 18816490), (2, 9408245), (5, 3763298), (7, 2688070), (10, 1881649), (11, 1710590), (14, 1344035), (22, 855295), (35, 537614), (49, 384010), (55, 342118), (70, 268807), (77, 244370), (98, 192005), (110, 171059), (154, 122185), (245, 76802), (385, 48874), (490, 38401), (539, 34910), (770, 24437), (1078, 17455), (2695, 6982), (3491, 5390)]