20925380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1091}}^1$

素因数の和:1244

約数の個数: 48

約数和(自身を含む): 50633856

約数和(自身を除く): 29708476

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 137, 140, 274, 548, 685, 959, 1091, 1370, 1918, 2182, 2740, 3836, 4364, 4795, 5455, 7637, 9590, 10910, 15274, 19180, 21820, 30548, 38185, 76370, 149467, 152740, 298934, 597868, 747335, 1046269, 1494670, 2092538, 2989340, 4185076, 5231345, 10462690, 20925380]

約数ペア:

[(1, 20925380), (2, 10462690), (4, 5231345), (5, 4185076), (7, 2989340), (10, 2092538), (14, 1494670), (20, 1046269), (28, 747335), (35, 597868), (70, 298934), (137, 152740), (140, 149467), (274, 76370), (548, 38185), (685, 30548), (959, 21820), (1091, 19180), (1370, 15274), (1918, 10910), (2182, 9590), (2740, 7637), (3836, 5455), (4364, 4795)]