20493830

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{2137}}^1$

素因数の和:2288

約数の個数: 32

約数和(自身を含む): 42486336

約数和(自身を除く): 21992506

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 137, 274, 685, 959, 1370, 1918, 2137, 4274, 4795, 9590, 10685, 14959, 21370, 29918, 74795, 149590, 292769, 585538, 1463845, 2049383, 2927690, 4098766, 10246915, 20493830]

約数ペア:

[(1, 20493830), (2, 10246915), (5, 4098766), (7, 2927690), (10, 2049383), (14, 1463845), (35, 585538), (70, 292769), (137, 149590), (274, 74795), (685, 29918), (959, 21370), (1370, 14959), (1918, 10685), (2137, 9590), (4274, 4795)]