251121920

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{28027}}^1$

素因数の和:28055

約数の個数: 72

約数和(自身を含む): 687470784

約数和(自身を除く): 436348864

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 560, 640, 896, 1120, 1280, 1792, 2240, 4480, 8960, 28027, 56054, 112108, 140135, 196189, 224216, 280270, 392378, 448432, 560540, 784756, 896864, 980945, 1121080, 1569512, 1793728, 1961890, 2242160, 3139024, 3587456, 3923780, 4484320, 6278048, 7174912, 7847560, 8968640, 12556096, 15695120, 17937280, 25112192, 31390240, 35874560, 50224384, 62780480, 125560960, 251121920]

約数ペア:

[(1, 251121920), (2, 125560960), (4, 62780480), (5, 50224384), (7, 35874560), (8, 31390240), (10, 25112192), (14, 17937280), (16, 15695120), (20, 12556096), (28, 8968640), (32, 7847560), (35, 7174912), (40, 6278048), (56, 4484320), (64, 3923780), (70, 3587456), (80, 3139024), (112, 2242160), (128, 1961890), (140, 1793728), (160, 1569512), (224, 1121080), (256, 980945), (280, 896864), (320, 784756), (448, 560540), (560, 448432), (640, 392378), (896, 280270), (1120, 224216), (1280, 196189), (1792, 140135), (2240, 112108), (4480, 56054), (8960, 28027)]