21313839

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{5581}}^1$

素因数の和:5670

約数の個数: 16

約数和(自身を含む): 30366080

約数和(自身を除く): 9052241

約数列:

[1, 3, 19, 57, 67, 201, 1273, 3819, 5581, 16743, 106039, 318117, 373927, 1121781, 7104613, 21313839]

約数ペア:

[(1, 21313839), (3, 7104613), (19, 1121781), (57, 373927), (67, 318117), (201, 106039), (1273, 16743), (3819, 5581)]