20386145

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{971}}^1$

素因数の和:1025

約数の個数: 32

約数和(自身を含む): 29393280

約数和(自身を除く): 9007135

約数列:

[1, 5, 13, 17, 19, 65, 85, 95, 221, 247, 323, 971, 1105, 1235, 1615, 4199, 4855, 12623, 16507, 18449, 20995, 63115, 82535, 92245, 214591, 239837, 313633, 1072955, 1199185, 1568165, 4077229, 20386145]

約数ペア:

[(1, 20386145), (5, 4077229), (13, 1568165), (17, 1199185), (19, 1072955), (65, 313633), (85, 239837), (95, 214591), (221, 92245), (247, 82535), (323, 63115), (971, 20995), (1105, 18449), (1235, 16507), (1615, 12623), (4199, 4855)]