21968253

素因数分解:

$3^4\times {\mathrm{367}}^1\times {\mathrm{739}}^1$

素因数の和:1118

約数の個数: 20

約数和(自身を含む): 32950720

約数和(自身を除く): 10982467

約数列:

[1, 3, 9, 27, 81, 367, 739, 1101, 2217, 3303, 6651, 9909, 19953, 29727, 59859, 271213, 813639, 2440917, 7322751, 21968253]

約数ペア:

[(1, 21968253), (3, 7322751), (9, 2440917), (27, 813639), (81, 271213), (367, 59859), (739, 29727), (1101, 19953), (2217, 9909), (3303, 6651)]