20493325

素因数分解:

$5^2\times {\mathrm{31}}^2\times {\mathrm{853}}^1$

素因数の和:925

約数の個数: 18

約数和(自身を含む): 26288682

約数和(自身を除く): 5795357

約数列:

[1, 5, 25, 31, 155, 775, 853, 961, 4265, 4805, 21325, 24025, 26443, 132215, 661075, 819733, 4098665, 20493325]

約数ペア:

[(1, 20493325), (5, 4098665), (25, 819733), (31, 661075), (155, 132215), (775, 26443), (853, 24025), (961, 21325), (4265, 4805)]