20867371

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1$

素因数の和:211

約数の個数: 32

約数和(自身を含む): 26615808

約数和(自身を除く): 5748437

約数列:

[1, 7, 23, 31, 37, 113, 161, 217, 259, 713, 791, 851, 1147, 2599, 3503, 4181, 4991, 5957, 8029, 18193, 24521, 26381, 29267, 80569, 96163, 129611, 184667, 563983, 673141, 907277, 2981053, 20867371]

約数ペア:

[(1, 20867371), (7, 2981053), (23, 907277), (31, 673141), (37, 563983), (113, 184667), (161, 129611), (217, 96163), (259, 80569), (713, 29267), (791, 26381), (851, 24521), (1147, 18193), (2599, 8029), (3503, 5957), (4181, 4991)]