21131858

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1\times {\mathrm{191}}^1$

素因数の和:358

約数の個数: 32

約数和(自身を含む): 35831808

約数和(自身を除く): 14699950

約数列:

[1, 2, 11, 22, 47, 94, 107, 191, 214, 382, 517, 1034, 1177, 2101, 2354, 4202, 5029, 8977, 10058, 17954, 20437, 40874, 55319, 98747, 110638, 197494, 224807, 449614, 960539, 1921078, 10565929, 21131858]

約数ペア:

[(1, 21131858), (2, 10565929), (11, 1921078), (22, 960539), (47, 449614), (94, 224807), (107, 197494), (191, 110638), (214, 98747), (382, 55319), (517, 40874), (1034, 20437), (1177, 17954), (2101, 10058), (2354, 8977), (4202, 5029)]