20911173

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{89}}^1\times {\mathrm{271}}^1$

素因数の和:397

約数の個数: 24

約数和(自身を含む): 30061440

約数和(自身を除く): 9150267

約数列:

[1, 3, 17, 51, 89, 267, 271, 289, 813, 867, 1513, 4539, 4607, 13821, 24119, 25721, 72357, 77163, 78319, 234957, 410023, 1230069, 6970391, 20911173]

約数ペア:

[(1, 20911173), (3, 6970391), (17, 1230069), (51, 410023), (89, 234957), (267, 78319), (271, 77163), (289, 72357), (813, 25721), (867, 24119), (1513, 13821), (4539, 4607)]