21294417

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{383}}^1\times {\mathrm{431}}^1$

素因数の和:860

約数の個数: 16

約数和(自身を含む): 29196288

約数和(自身を除く): 7901871

約数列:

[1, 3, 43, 129, 383, 431, 1149, 1293, 16469, 18533, 49407, 55599, 165073, 495219, 7098139, 21294417]

約数ペア:

[(1, 21294417), (3, 7098139), (43, 495219), (129, 165073), (383, 55599), (431, 49407), (1149, 18533), (1293, 16469)]