20127261

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{89}}^2$

素因数の和:210

約数の個数: 36

約数和(自身を含む): 34094816

約数和(自身を除く): 13967555

約数列:

[1, 3, 7, 11, 21, 33, 77, 89, 121, 231, 267, 363, 623, 847, 979, 1869, 2541, 2937, 6853, 7921, 10769, 20559, 23763, 32307, 55447, 75383, 87131, 166341, 226149, 261393, 609917, 958441, 1829751, 2875323, 6709087, 20127261]

約数ペア:

[(1, 20127261), (3, 6709087), (7, 2875323), (11, 1829751), (21, 958441), (33, 609917), (77, 261393), (89, 226149), (121, 166341), (231, 87131), (267, 75383), (363, 55447), (623, 32307), (847, 23763), (979, 20559), (1869, 10769), (2541, 7921), (2937, 6853)]