20871964225

素因数分解:

$5^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{939121}}^1$

素因数の和:939265

約数の個数: 24

約数和(自身を含む): 29811488768

約数和(自身を除く): 8939524543

約数列:

[1, 5, 7, 25, 35, 127, 175, 635, 889, 3175, 4445, 22225, 939121, 4695605, 6573847, 23478025, 32869235, 119268367, 164346175, 596341835, 834878569, 2981709175, 4174392845, 20871964225]

約数ペア:

[(1, 20871964225), (5, 4174392845), (7, 2981709175), (25, 834878569), (35, 596341835), (127, 164346175), (175, 119268367), (635, 32869235), (889, 23478025), (3175, 6573847), (4445, 4695605), (22225, 939121)]