20420535

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{523}}^1$

素因数の和:687

約数の個数: 32

約数和(自身を含む): 34709760

約数和(自身を除く): 14289225

約数列:

[1, 3, 5, 15, 19, 57, 95, 137, 285, 411, 523, 685, 1569, 2055, 2603, 2615, 7809, 7845, 9937, 13015, 29811, 39045, 49685, 71651, 149055, 214953, 358255, 1074765, 1361369, 4084107, 6806845, 20420535]

約数ペア:

[(1, 20420535), (3, 6806845), (5, 4084107), (15, 1361369), (19, 1074765), (57, 358255), (95, 214953), (137, 149055), (285, 71651), (411, 49685), (523, 39045), (685, 29811), (1569, 13015), (2055, 9937), (2603, 7845), (2615, 7809)]