20523805

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{223}}^1\times {\mathrm{233}}^1$

素因数の和:540

約数の個数: 16

約数和(自身を含む): 25159680

約数和(自身を除く): 4635875

約数列:

[1, 5, 79, 223, 233, 395, 1115, 1165, 17617, 18407, 51959, 88085, 92035, 259795, 4104761, 20523805]

約数ペア:

[(1, 20523805), (5, 4104761), (79, 259795), (223, 92035), (233, 88085), (395, 51959), (1115, 18407), (1165, 17617)]