21256478

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{19289}}^1$

素因数の和:19339

約数の個数: 16

約数和(自身を含む): 34722000

約数和(自身を除く): 13465522

約数列:

[1, 2, 19, 29, 38, 58, 551, 1102, 19289, 38578, 366491, 559381, 732982, 1118762, 10628239, 21256478]

約数ペア:

[(1, 21256478), (2, 10628239), (19, 1118762), (29, 732982), (38, 559381), (58, 366491), (551, 38578), (1102, 19289)]