19457920

素因数分解:

$2^7\times 5^1\times {\mathrm{30403}}^1$

素因数の和:30422

約数の個数: 32

約数和(自身を含む): 46518120

約数和(自身を除く): 27060200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 30403, 60806, 121612, 152015, 243224, 304030, 486448, 608060, 972896, 1216120, 1945792, 2432240, 3891584, 4864480, 9728960, 19457920]

約数ペア:

[(1, 19457920), (2, 9728960), (4, 4864480), (5, 3891584), (8, 2432240), (10, 1945792), (16, 1216120), (20, 972896), (32, 608060), (40, 486448), (64, 304030), (80, 243224), (128, 152015), (160, 121612), (320, 60806), (640, 30403)]