1291245380

素因数分解:

$2^2\times 5^1\times {\mathrm{13487}}^1\times {\mathrm{4787}}^1$

素因数の和:18283

約数の個数: 24

約数和(自身を含む): 2712382848

約数和(自身を除く): 1421137468

約数列:

[1, 2, 4, 5, 10, 20, 4787, 9574, 13487, 19148, 23935, 26974, 47870, 53948, 67435, 95740, 134870, 269740, 64562269, 129124538, 258249076, 322811345, 645622690, 1291245380]

約数ペア:

[(1, 1291245380), (2, 645622690), (4, 322811345), (5, 258249076), (10, 129124538), (20, 64562269), (4787, 269740), (9574, 134870), (13487, 95740), (19148, 67435), (23935, 53948), (26974, 47870)]