28503969

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{739}}^1$

素因数の和:821

約数の個数: 32

約数和(自身を含む): 43760640

約数和(自身を除く): 15256671

約数列:

[1, 3, 13, 23, 39, 43, 69, 129, 299, 559, 739, 897, 989, 1677, 2217, 2967, 9607, 12857, 16997, 28821, 31777, 38571, 50991, 95331, 220961, 413101, 662883, 730871, 1239303, 2192613, 9501323, 28503969]

約数ペア:

[(1, 28503969), (3, 9501323), (13, 2192613), (23, 1239303), (39, 730871), (43, 662883), (69, 413101), (129, 220961), (299, 95331), (559, 50991), (739, 38571), (897, 31777), (989, 28821), (1677, 16997), (2217, 12857), (2967, 9607)]