20991194637

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{186107}}^1$

素因数の和:186289

約数の個数: 32

約数和(自身を含む): 33017048064

約数和(自身を除く): 12025853427

約数列:

[1, 3, 7, 21, 41, 123, 131, 287, 393, 861, 917, 2751, 5371, 16113, 37597, 112791, 186107, 558321, 1302749, 3908247, 7630387, 22891161, 24380017, 53412709, 73140051, 160238127, 170660119, 511980357, 999580697, 2998742091, 6997064879, 20991194637]

約数ペア:

[(1, 20991194637), (3, 6997064879), (7, 2998742091), (21, 999580697), (41, 511980357), (123, 170660119), (131, 160238127), (287, 73140051), (393, 53412709), (861, 24380017), (917, 22891161), (2751, 7630387), (5371, 3908247), (16113, 1302749), (37597, 558321), (112791, 186107)]