21053273

素因数分解:

${\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{353}}^1$

素因数の和:488

約数の個数: 16

約数和(自身を含む): 23052480

約数和(自身を除く): 1999207

約数列:

[1, 19, 43, 73, 353, 817, 1387, 3139, 6707, 15179, 25769, 59641, 288401, 489611, 1108067, 21053273]

約数ペア:

[(1, 21053273), (19, 1108067), (43, 489611), (73, 288401), (353, 59641), (817, 25769), (1387, 15179), (3139, 6707)]