20281653

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{13997}}^1$

素因数の和:14033

約数の個数: 24

約数和(自身を含む): 34939008

約数和(自身を除く): 14657355

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 161, 207, 483, 1449, 13997, 41991, 97979, 125973, 293937, 321931, 881811, 965793, 2253517, 2897379, 6760551, 20281653]

約数ペア:

[(1, 20281653), (3, 6760551), (7, 2897379), (9, 2253517), (21, 965793), (23, 881811), (63, 321931), (69, 293937), (161, 125973), (207, 97979), (483, 41991), (1449, 13997)]