81649120

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{72901}}^1$

素因数の和:72923

約数の個数: 48

約数和(自身を含む): 220455648

約数和(自身を除く): 138806528

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, 72901, 145802, 291604, 364505, 510307, 583208, 729010, 1020614, 1166416, 1458020, 2041228, 2332832, 2551535, 2916040, 4082456, 5103070, 5832080, 8164912, 10206140, 11664160, 16329824, 20412280, 40824560, 81649120]

約数ペア:

[(1, 81649120), (2, 40824560), (4, 20412280), (5, 16329824), (7, 11664160), (8, 10206140), (10, 8164912), (14, 5832080), (16, 5103070), (20, 4082456), (28, 2916040), (32, 2551535), (35, 2332832), (40, 2041228), (56, 1458020), (70, 1166416), (80, 1020614), (112, 729010), (140, 583208), (160, 510307), (224, 364505), (280, 291604), (560, 145802), (1120, 72901)]