20950395

素因数分解:

$3^1\times 5^1\times {\mathrm{661}}^1\times {\mathrm{2113}}^1$

素因数の和:2782

約数の個数: 16

約数和(自身を含む): 33587232

約数和(自身を除く): 12636837

約数列:

[1, 3, 5, 15, 661, 1983, 2113, 3305, 6339, 9915, 10565, 31695, 1396693, 4190079, 6983465, 20950395]

約数ペア:

[(1, 20950395), (3, 6983465), (5, 4190079), (15, 1396693), (661, 31695), (1983, 10565), (2113, 9915), (3305, 6339)]