20493005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{8521}}^1$

素因数の和:8576

約数の個数: 16

約数和(自身を含む): 27202224

約数和(自身を除く): 6709219

約数列:

[1, 5, 13, 37, 65, 185, 481, 2405, 8521, 42605, 110773, 315277, 553865, 1576385, 4098601, 20493005]

約数ペア:

[(1, 20493005), (5, 4098601), (13, 1576385), (37, 553865), (65, 315277), (185, 110773), (481, 42605), (2405, 8521)]