19819345

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1013}}^1$

素因数の和:1081

約数の個数: 32

約数和(自身を含む): 29981952

約数和(自身を除く): 10162607

約数列:

[1, 5, 7, 13, 35, 43, 65, 91, 215, 301, 455, 559, 1013, 1505, 2795, 3913, 5065, 7091, 13169, 19565, 35455, 43559, 65845, 92183, 217795, 304913, 460915, 566267, 1524565, 2831335, 3963869, 19819345]

約数ペア:

[(1, 19819345), (5, 3963869), (7, 2831335), (13, 1524565), (35, 566267), (43, 460915), (65, 304913), (91, 217795), (215, 92183), (301, 65845), (455, 43559), (559, 35455), (1013, 19565), (1505, 13169), (2795, 7091), (3913, 5065)]