31281081

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{811}}^1$

素因数の和:893

約数の個数: 32

約数和(自身を含む): 48018432

約数和(自身を除く): 16737351

約数列:

[1, 3, 13, 23, 39, 43, 69, 129, 299, 559, 811, 897, 989, 1677, 2433, 2967, 10543, 12857, 18653, 31629, 34873, 38571, 55959, 104619, 242489, 453349, 727467, 802079, 1360047, 2406237, 10427027, 31281081]

約数ペア:

[(1, 31281081), (3, 10427027), (13, 2406237), (23, 1360047), (39, 802079), (43, 727467), (69, 453349), (129, 242489), (299, 104619), (559, 55959), (811, 38571), (897, 34873), (989, 31629), (1677, 18653), (2433, 12857), (2967, 10543)]