21387338

素因数分解:

$2^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{151}}^2$

素因数の和:378

約数の個数: 24

約数和(自身を含む): 37459296

約数和(自身を除く): 16071958

約数列:

[1, 2, 7, 14, 67, 134, 151, 302, 469, 938, 1057, 2114, 10117, 20234, 22801, 45602, 70819, 141638, 159607, 319214, 1527667, 3055334, 10693669, 21387338]

約数ペア:

[(1, 21387338), (2, 10693669), (7, 3055334), (14, 1527667), (67, 319214), (134, 159607), (151, 141638), (302, 70819), (469, 45602), (938, 22801), (1057, 20234), (2114, 10117)]