387980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1021}}^1$

素因数の和:1049

約数の個数: 24

約数和(自身を含む): 858480

約数和(自身を除く): 470500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 1021, 2042, 4084, 5105, 10210, 19399, 20420, 38798, 77596, 96995, 193990, 387980]

約数ペア:

[(1, 387980), (2, 193990), (4, 96995), (5, 77596), (10, 38798), (19, 20420), (20, 19399), (38, 10210), (76, 5105), (95, 4084), (190, 2042), (380, 1021)]