20628129

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{9781}}^1$

素因数の和:9840

約数の個数: 16

約数和(自身を含む): 29737280

約数和(自身を除く): 9109151

約数列:

[1, 3, 19, 37, 57, 111, 703, 2109, 9781, 29343, 185839, 361897, 557517, 1085691, 6876043, 20628129]

約数ペア:

[(1, 20628129), (3, 6876043), (19, 1085691), (37, 557517), (57, 361897), (111, 185839), (703, 29343), (2109, 9781)]