19877858

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{9929}}^1$

素因数の和:9962

約数の個数: 32

約数和(自身を含む): 40037760

約数和(自身を除く): 20159902

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 77, 91, 143, 154, 182, 286, 1001, 2002, 9929, 19858, 69503, 109219, 129077, 139006, 218438, 258154, 764533, 903539, 1419847, 1529066, 1807078, 2839694, 9938929, 19877858]

約数ペア:

[(1, 19877858), (2, 9938929), (7, 2839694), (11, 1807078), (13, 1529066), (14, 1419847), (22, 903539), (26, 764533), (77, 258154), (91, 218438), (143, 139006), (154, 129077), (182, 109219), (286, 69503), (1001, 19858), (2002, 9929)]