20745387

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{631}}^1$

素因数の和:931

約数の個数: 24

約数和(自身を含む): 32436768

約数和(自身を除く): 11691381

約数列:

[1, 3, 9, 13, 39, 117, 281, 631, 843, 1893, 2529, 3653, 5679, 8203, 10959, 24609, 32877, 73827, 177311, 531933, 1595799, 2305043, 6915129, 20745387]

約数ペア:

[(1, 20745387), (3, 6915129), (9, 2305043), (13, 1595799), (39, 531933), (117, 177311), (281, 73827), (631, 32877), (843, 24609), (1893, 10959), (2529, 8203), (3653, 5679)]