20499085

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{1297}}^1$

素因数の和:1440

約数の個数: 16

約数和(自身を含む): 25700400

約数和(自身を除く): 5201315

約数列:

[1, 5, 29, 109, 145, 545, 1297, 3161, 6485, 15805, 37613, 141373, 188065, 706865, 4099817, 20499085]

約数ペア:

[(1, 20499085), (5, 4099817), (29, 706865), (109, 188065), (145, 141373), (545, 37613), (1297, 15805), (3161, 6485)]