19404008

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4339}}^1$

素因数の和:4401

約数の個数: 32

約数和(自身を含む): 40101600

約数和(自身を除く): 20697592

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 86, 104, 172, 344, 559, 1118, 2236, 4339, 4472, 8678, 17356, 34712, 56407, 112814, 186577, 225628, 373154, 451256, 746308, 1492616, 2425501, 4851002, 9702004, 19404008]

約数ペア:

[(1, 19404008), (2, 9702004), (4, 4851002), (8, 2425501), (13, 1492616), (26, 746308), (43, 451256), (52, 373154), (86, 225628), (104, 186577), (172, 112814), (344, 56407), (559, 34712), (1118, 17356), (2236, 8678), (4339, 4472)]