20438781

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{661}}^1\times {\mathrm{937}}^1$

素因数の和:1612

約数の個数: 16

約数和(自身を含む): 29805888

約数和(自身を除く): 9367107

約数列:

[1, 3, 11, 33, 661, 937, 1983, 2811, 7271, 10307, 21813, 30921, 619357, 1858071, 6812927, 20438781]

約数ペア:

[(1, 20438781), (3, 6812927), (11, 1858071), (33, 619357), (661, 30921), (937, 21813), (1983, 10307), (2811, 7271)]