19977090

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{379}}^1$

素因数の和:647

約数の個数: 64

約数和(自身を含む): 55157760

約数和(自身を除く): 35180670

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 251, 379, 502, 753, 758, 1137, 1255, 1506, 1757, 1895, 2274, 2510, 2653, 3514, 3765, 3790, 5271, 5306, 5685, 7530, 7959, 8785, 10542, 11370, 13265, 15918, 17570, 26355, 26530, 39795, 52710, 79590, 95129, 190258, 285387, 475645, 570774, 665903, 951290, 1331806, 1426935, 1997709, 2853870, 3329515, 3995418, 6659030, 9988545, 19977090]

約数ペア:

[(1, 19977090), (2, 9988545), (3, 6659030), (5, 3995418), (6, 3329515), (7, 2853870), (10, 1997709), (14, 1426935), (15, 1331806), (21, 951290), (30, 665903), (35, 570774), (42, 475645), (70, 285387), (105, 190258), (210, 95129), (251, 79590), (379, 52710), (502, 39795), (753, 26530), (758, 26355), (1137, 17570), (1255, 15918), (1506, 13265), (1757, 11370), (1895, 10542), (2274, 8785), (2510, 7959), (2653, 7530), (3514, 5685), (3765, 5306), (3790, 5271)]