12980289

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:325

約数の個数: 32

約数和(自身を含む): 20709376

約数和(自身を除く): 7729087

約数列:

[1, 3, 7, 21, 31, 93, 127, 157, 217, 381, 471, 651, 889, 1099, 2667, 3297, 3937, 4867, 11811, 14601, 19939, 27559, 34069, 59817, 82677, 102207, 139573, 418719, 618109, 1854327, 4326763, 12980289]

約数ペア:

[(1, 12980289), (3, 4326763), (7, 1854327), (21, 618109), (31, 418719), (93, 139573), (127, 102207), (157, 82677), (217, 59817), (381, 34069), (471, 27559), (651, 19939), (889, 14601), (1099, 11811), (2667, 4867), (3297, 3937)]