19811636

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{2557}}^1$

素因数の和:2723

約数の個数: 24

約数和(自身を含む): 37602600

約数和(自身を除く): 17790964

約数列:

[1, 2, 4, 13, 26, 52, 149, 298, 596, 1937, 2557, 3874, 5114, 7748, 10228, 33241, 66482, 132964, 380993, 761986, 1523972, 4952909, 9905818, 19811636]

約数ペア:

[(1, 19811636), (2, 9905818), (4, 4952909), (13, 1523972), (26, 761986), (52, 380993), (149, 132964), (298, 66482), (596, 33241), (1937, 10228), (2557, 7748), (3874, 5114)]