20737215

素因数分解:

$3^4\times 5^1\times {\mathrm{51203}}^1$

素因数の和:51220

約数の個数: 20

約数和(自身を含む): 37174104

約数和(自身を除く): 16436889

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 51203, 153609, 256015, 460827, 768045, 1382481, 2304135, 4147443, 6912405, 20737215]

約数ペア:

[(1, 20737215), (3, 6912405), (5, 4147443), (9, 2304135), (15, 1382481), (27, 768045), (45, 460827), (81, 256015), (135, 153609), (405, 51203)]