20631340

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{54293}}^1$

素因数の和:54321

約数の個数: 24

約数和(自身を含む): 45606960

約数和(自身を除く): 24975620

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 54293, 108586, 217172, 271465, 542930, 1031567, 1085860, 2063134, 4126268, 5157835, 10315670, 20631340]

約数ペア:

[(1, 20631340), (2, 10315670), (4, 5157835), (5, 4126268), (10, 2063134), (19, 1085860), (20, 1031567), (38, 542930), (76, 271465), (95, 217172), (190, 108586), (380, 54293)]