20180149640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72071963}}^1$

素因数の和:72071981

約数の個数: 32

約数和(自身を含む): 51891814080

約数和(自身を除く): 31711664440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72071963, 144143926, 288287852, 360359815, 504503741, 576575704, 720719630, 1009007482, 1441439260, 2018014964, 2522518705, 2882878520, 4036029928, 5045037410, 10090074820, 20180149640]

約数ペア:

[(1, 20180149640), (2, 10090074820), (4, 5045037410), (5, 4036029928), (7, 2882878520), (8, 2522518705), (10, 2018014964), (14, 1441439260), (20, 1009007482), (28, 720719630), (35, 576575704), (40, 504503741), (56, 360359815), (70, 288287852), (140, 144143926), (280, 72071963)]