215826513

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{3121}}^1$

素因数の和:3257

約数の個数: 32

約数和(自身を含む): 341671680

約数和(自身を除く): 125845167

約数列:

[1, 3, 7, 21, 37, 89, 111, 259, 267, 623, 777, 1869, 3121, 3293, 9363, 9879, 21847, 23051, 65541, 69153, 115477, 277769, 346431, 808339, 833307, 1944383, 2425017, 5833149, 10277453, 30832359, 71942171, 215826513]

約数ペア:

[(1, 215826513), (3, 71942171), (7, 30832359), (21, 10277453), (37, 5833149), (89, 2425017), (111, 1944383), (259, 833307), (267, 808339), (623, 346431), (777, 277769), (1869, 115477), (3121, 69153), (3293, 65541), (9363, 23051), (9879, 21847)]