20408565

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{709}}^1$

素因数の和:837

約数の個数: 32

約数和(自身を含む): 34761600

約数和(自身を除く): 14353035

約数列:

[1, 3, 5, 15, 19, 57, 95, 101, 285, 303, 505, 709, 1515, 1919, 2127, 3545, 5757, 9595, 10635, 13471, 28785, 40413, 67355, 71609, 202065, 214827, 358045, 1074135, 1360571, 4081713, 6802855, 20408565]

約数ペア:

[(1, 20408565), (3, 6802855), (5, 4081713), (15, 1360571), (19, 1074135), (57, 358045), (95, 214827), (101, 202065), (285, 71609), (303, 67355), (505, 40413), (709, 28785), (1515, 13471), (1919, 10635), (2127, 9595), (3545, 5757)]