20947165

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{907}}^1$

素因数の和:1092

約数の個数: 16

約数和(自身を含む): 26150400

約数和(自身を除く): 5203235

約数列:

[1, 5, 31, 149, 155, 745, 907, 4535, 4619, 23095, 28117, 135143, 140585, 675715, 4189433, 20947165]

約数ペア:

[(1, 20947165), (5, 4189433), (31, 675715), (149, 140585), (155, 135143), (745, 28117), (907, 23095), (4535, 4619)]