19720778870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{7984121}}^1$

素因数の和:7984160

約数の個数: 32

約数和(自身を含む): 40239974880

約数和(自身を除く): 20519196010

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 7984121, 15968242, 39920605, 79841210, 103793573, 151698299, 207587146, 303396598, 518967865, 758491495, 1037935730, 1516982990, 1972077887, 3944155774, 9860389435, 19720778870]

約数ペア:

[(1, 19720778870), (2, 9860389435), (5, 3944155774), (10, 1972077887), (13, 1516982990), (19, 1037935730), (26, 758491495), (38, 518967865), (65, 303396598), (95, 207587146), (130, 151698299), (190, 103793573), (247, 79841210), (494, 39920605), (1235, 15968242), (2470, 7984121)]