20865243

素因数分解:

$3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{12577}}^1$

素因数の和:12666

約数の個数: 16

約数和(自身を含む): 32199680

約数和(自身を除く): 11334437

約数列:

[1, 3, 7, 21, 79, 237, 553, 1659, 12577, 37731, 88039, 264117, 993583, 2980749, 6955081, 20865243]

約数ペア:

[(1, 20865243), (3, 6955081), (7, 2980749), (21, 993583), (79, 264117), (237, 88039), (553, 37731), (1659, 12577)]