879904420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{4523}}^1$

素因数の和:4740

約数の個数: 48

約数和(自身を含む): 1887919488

約数和(自身を除く): 1008015068

約数列:

[1, 2, 4, 5, 10, 20, 71, 137, 142, 274, 284, 355, 548, 685, 710, 1370, 1420, 2740, 4523, 9046, 9727, 18092, 19454, 22615, 38908, 45230, 48635, 90460, 97270, 194540, 321133, 619651, 642266, 1239302, 1284532, 1605665, 2478604, 3098255, 3211330, 6196510, 6422660, 12393020, 43995221, 87990442, 175980884, 219976105, 439952210, 879904420]

約数ペア:

[(1, 879904420), (2, 439952210), (4, 219976105), (5, 175980884), (10, 87990442), (20, 43995221), (71, 12393020), (137, 6422660), (142, 6196510), (274, 3211330), (284, 3098255), (355, 2478604), (548, 1605665), (685, 1284532), (710, 1239302), (1370, 642266), (1420, 619651), (2740, 321133), (4523, 194540), (9046, 97270), (9727, 90460), (18092, 48635), (19454, 45230), (22615, 38908)]