28889931

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{20533}}^1$

素因数の和:20610

約数の個数: 16

約数和(自身を含む): 44681984

約数和(自身を除く): 15792053

約数列:

[1, 3, 7, 21, 67, 201, 469, 1407, 20533, 61599, 143731, 431193, 1375711, 4127133, 9629977, 28889931]

約数ペア:

[(1, 28889931), (3, 9629977), (7, 4127133), (21, 1375711), (67, 431193), (201, 143731), (469, 61599), (1407, 20533)]