20507695

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{277}}^1$

素因数の和:379

約数の個数: 32

約数和(自身を含む): 28582848

約数和(自身を除く): 8075153

約数列:

[1, 5, 13, 17, 65, 67, 85, 221, 277, 335, 871, 1105, 1139, 1385, 3601, 4355, 4709, 5695, 14807, 18005, 18559, 23545, 61217, 74035, 92795, 241267, 306085, 315503, 1206335, 1577515, 4101539, 20507695]

約数ペア:

[(1, 20507695), (5, 4101539), (13, 1577515), (17, 1206335), (65, 315503), (67, 306085), (85, 241267), (221, 92795), (277, 74035), (335, 61217), (871, 23545), (1105, 18559), (1139, 18005), (1385, 14807), (3601, 5695), (4355, 4709)]