21137588

素因数分解:

$2^2\times {\mathrm{73}}^1\times {\mathrm{191}}^1\times {\mathrm{379}}^1$

素因数の和:647

約数の個数: 24

約数和(自身を含む): 37793280

約数和(自身を除く): 16655692

約数列:

[1, 2, 4, 73, 146, 191, 292, 379, 382, 758, 764, 1516, 13943, 27667, 27886, 55334, 55772, 72389, 110668, 144778, 289556, 5284397, 10568794, 21137588]

約数ペア:

[(1, 21137588), (2, 10568794), (4, 5284397), (73, 289556), (146, 144778), (191, 110668), (292, 72389), (379, 55772), (382, 55334), (758, 27886), (764, 27667), (1516, 13943)]