19991567239

素因数分解:

$7^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1\times {\mathrm{499}}^1\times {\mathrm{601}}^1$

素因数の和:1303

約数の個数: 32

約数和(自身を含む): 23405760000

約数和(自身を除く): 3414192761

約数列:

[1, 7, 89, 107, 499, 601, 623, 749, 3493, 4207, 9523, 44411, 53393, 53489, 64307, 66661, 299899, 310877, 373751, 374423, 450149, 2099293, 4751977, 5723323, 26691011, 32089193, 33263839, 40063261, 186837077, 224624351, 2855938177, 19991567239]

約数ペア:

[(1, 19991567239), (7, 2855938177), (89, 224624351), (107, 186837077), (499, 40063261), (601, 33263839), (623, 32089193), (749, 26691011), (3493, 5723323), (4207, 4751977), (9523, 2099293), (44411, 450149), (53393, 374423), (53489, 373751), (64307, 310877), (66661, 299899)]