399380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1051}}^1$

素因数の和:1079

約数の個数: 24

約数和(自身を含む): 883680

約数和(自身を除く): 484300

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 1051, 2102, 4204, 5255, 10510, 19969, 21020, 39938, 79876, 99845, 199690, 399380]

約数ペア:

[(1, 399380), (2, 199690), (4, 99845), (5, 79876), (10, 39938), (19, 21020), (20, 19969), (38, 10510), (76, 5255), (95, 4204), (190, 2102), (380, 1051)]