380860

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1$

素因数の和:285

約数の個数: 24

約数和(自身を含む): 811440

約数和(自身を除く): 430580

約数列:

[1, 2, 4, 5, 10, 20, 137, 139, 274, 278, 548, 556, 685, 695, 1370, 1390, 2740, 2780, 19043, 38086, 76172, 95215, 190430, 380860]

約数ペア:

[(1, 380860), (2, 190430), (4, 95215), (5, 76172), (10, 38086), (20, 19043), (137, 2780), (139, 2740), (274, 1390), (278, 1370), (548, 695), (556, 685)]