18864805

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{163}}^1\times {\mathrm{293}}^1$

素因数の和:540

約数の個数: 16

約数和(自身を含む): 23143680

約数和(自身を除く): 4278875

約数列:

[1, 5, 79, 163, 293, 395, 815, 1465, 12877, 23147, 47759, 64385, 115735, 238795, 3772961, 18864805]

約数ペア:

[(1, 18864805), (5, 3772961), (79, 238795), (163, 115735), (293, 64385), (395, 47759), (815, 23147), (1465, 12877)]