81400480

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{72679}}^1$

素因数の和:72701

約数の個数: 48

約数和(自身を含む): 219784320

約数和(自身を除く): 138383840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 72679, 145358, 290716, 363395, 508753, 581432, 726790, 1017506, 1162864, 1453580, 2035012, 2325728, 2543765, 2907160, 4070024, 5087530, 5814320, 8140048, 10175060, 11628640, 16280096, 20350120, 40700240, 81400480]

約数ペア:

[(1, 81400480), (2, 40700240), (4, 20350120), (5, 16280096), (7, 11628640), (8, 10175060), (10, 8140048), (14, 5814320), (16, 5087530), (20, 4070024), (28, 2907160), (32, 2543765), (35, 2325728), (40, 2035012), (56, 1453580), (70, 1162864), (80, 1017506), (112, 726790), (140, 581432), (160, 508753), (224, 363395), (280, 290716), (560, 145358), (1120, 72679)]