21087351

素因数分解:

$3^3\times {\mathrm{457}}^1\times {\mathrm{1709}}^1$

素因数の和:2175

約数の個数: 16

約数和(自身を含む): 31327200

約数和(自身を除く): 10239849

約数列:

[1, 3, 9, 27, 457, 1371, 1709, 4113, 5127, 12339, 15381, 46143, 781013, 2343039, 7029117, 21087351]

約数ペア:

[(1, 21087351), (3, 7029117), (9, 2343039), (27, 781013), (457, 46143), (1371, 15381), (1709, 12339), (4113, 5127)]