21393477

素因数分解:

$3^5\times 7^1\times {\mathrm{12577}}^1$

素因数の和:12599

約数の個数: 24

約数和(自身を含む): 36627136

約数和(自身を除く): 15233659

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 12577, 37731, 88039, 113193, 264117, 339579, 792351, 1018737, 2377053, 3056211, 7131159, 21393477]

約数ペア:

[(1, 21393477), (3, 7131159), (7, 3056211), (9, 2377053), (21, 1018737), (27, 792351), (63, 339579), (81, 264117), (189, 113193), (243, 88039), (567, 37731), (1701, 12577)]