20903645

素因数分解:

$5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{2081}}^1$

素因数の和:2141

約数の個数: 24

約数和(自身を含む): 29905848

約数和(自身を除く): 9002203

約数列:

[1, 5, 7, 35, 41, 49, 205, 245, 287, 1435, 2009, 2081, 10045, 10405, 14567, 72835, 85321, 101969, 426605, 509845, 597247, 2986235, 4180729, 20903645]

約数ペア:

[(1, 20903645), (5, 4180729), (7, 2986235), (35, 597247), (41, 509845), (49, 426605), (205, 101969), (245, 85321), (287, 72835), (1435, 14567), (2009, 10405), (2081, 10045)]