20203902

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{15809}}^1$

素因数の和:15888

約数の個数: 24

約数和(自身を含む): 44394480

約数和(自身を除く): 24190578

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278, 15809, 31618, 47427, 94854, 142281, 284562, 1122439, 2244878, 3367317, 6734634, 10101951, 20203902]

約数ペア:

[(1, 20203902), (2, 10101951), (3, 6734634), (6, 3367317), (9, 2244878), (18, 1122439), (71, 284562), (142, 142281), (213, 94854), (426, 47427), (639, 31618), (1278, 15809)]