20388862

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{277}}^1$

素因数の和:460

約数の個数: 32

約数和(自身を含む): 35028000

約数和(自身を除く): 14639138

約数列:

[1, 2, 13, 19, 26, 38, 149, 247, 277, 298, 494, 554, 1937, 2831, 3601, 3874, 5263, 5662, 7202, 10526, 36803, 41273, 68419, 73606, 82546, 136838, 536549, 784187, 1073098, 1568374, 10194431, 20388862]

約数ペア:

[(1, 20388862), (2, 10194431), (13, 1568374), (19, 1073098), (26, 784187), (38, 536549), (149, 136838), (247, 82546), (277, 73606), (298, 68419), (494, 41273), (554, 36803), (1937, 10526), (2831, 7202), (3601, 5662), (3874, 5263)]