13281225

素因数分解:

$3^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{2903}}^1$

素因数の和:2977

約数の個数: 24

約数和(自身を含む): 22325952

約数和(自身を除く): 9044727

約数列:

[1, 3, 5, 15, 25, 61, 75, 183, 305, 915, 1525, 2903, 4575, 8709, 14515, 43545, 72575, 177083, 217725, 531249, 885415, 2656245, 4427075, 13281225]

約数ペア:

[(1, 13281225), (3, 4427075), (5, 2656245), (15, 885415), (25, 531249), (61, 217725), (75, 177083), (183, 72575), (305, 43545), (915, 14515), (1525, 8709), (2903, 4575)]