18717363

素因数分解:

$3^2\times 7^2\times {\mathrm{42443}}^1$

素因数の和:42463

約数の個数: 18

約数和(自身を含む): 31451004

約数和(自身を除く): 12733641

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 42443, 127329, 297101, 381987, 891303, 2079707, 2673909, 6239121, 18717363]

約数ペア:

[(1, 18717363), (3, 6239121), (7, 2673909), (9, 2079707), (21, 891303), (49, 381987), (63, 297101), (147, 127329), (441, 42443)]