21195988

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{6599}}^1$

素因数の和:6687

約数の個数: 24

約数和(自身を含む): 41025600

約数和(自身を除く): 19829612

約数列:

[1, 2, 4, 11, 22, 44, 73, 146, 292, 803, 1606, 3212, 6599, 13198, 26396, 72589, 145178, 290356, 481727, 963454, 1926908, 5298997, 10597994, 21195988]

約数ペア:

[(1, 21195988), (2, 10597994), (4, 5298997), (11, 1926908), (22, 963454), (44, 481727), (73, 290356), (146, 145178), (292, 72589), (803, 26396), (1606, 13198), (3212, 6599)]