19995118

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{463}}^1$

素因数の和:640

約数の個数: 32

約数和(自身を含む): 35546112

約数和(自身を除く): 15550994

約数列:

[1, 2, 11, 13, 22, 26, 143, 151, 286, 302, 463, 926, 1661, 1963, 3322, 3926, 5093, 6019, 10186, 12038, 21593, 43186, 66209, 69913, 132418, 139826, 769043, 908869, 1538086, 1817738, 9997559, 19995118]

約数ペア:

[(1, 19995118), (2, 9997559), (11, 1817738), (13, 1538086), (22, 908869), (26, 769043), (143, 139826), (151, 132418), (286, 69913), (302, 66209), (463, 43186), (926, 21593), (1661, 12038), (1963, 10186), (3322, 6019), (3926, 5093)]