80438120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{287279}}^1$

素因数の和:287297

約数の個数: 32

約数和(自身を含む): 206841600

約数和(自身を除く): 126403480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 287279, 574558, 1149116, 1436395, 2010953, 2298232, 2872790, 4021906, 5745580, 8043812, 10054765, 11491160, 16087624, 20109530, 40219060, 80438120]

約数ペア:

[(1, 80438120), (2, 40219060), (4, 20109530), (5, 16087624), (7, 11491160), (8, 10054765), (10, 8043812), (14, 5745580), (20, 4021906), (28, 2872790), (35, 2298232), (40, 2010953), (56, 1436395), (70, 1149116), (140, 574558), (280, 287279)]