20765920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18541}}^1$

素因数の和:18563

約数の個数: 48

約数和(自身を含む): 56071008

約数和(自身を除く): 35305088

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18541, 37082, 74164, 92705, 129787, 148328, 185410, 259574, 296656, 370820, 519148, 593312, 648935, 741640, 1038296, 1297870, 1483280, 2076592, 2595740, 2966560, 4153184, 5191480, 10382960, 20765920]

約数ペア:

[(1, 20765920), (2, 10382960), (4, 5191480), (5, 4153184), (7, 2966560), (8, 2595740), (10, 2076592), (14, 1483280), (16, 1297870), (20, 1038296), (28, 741640), (32, 648935), (35, 593312), (40, 519148), (56, 370820), (70, 296656), (80, 259574), (112, 185410), (140, 148328), (160, 129787), (224, 92705), (280, 74164), (560, 37082), (1120, 18541)]