2051220860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{72379}}^1$

素因数の和:72510

約数の個数: 48

約数和(自身を含む): 4681538400

約数和(自身を除く): 2630317540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 436, 545, 1090, 1417, 2180, 2834, 5668, 7085, 14170, 28340, 72379, 144758, 289516, 361895, 723790, 940927, 1447580, 1881854, 3763708, 4704635, 7889311, 9409270, 15778622, 18818540, 31557244, 39446555, 78893110, 102561043, 157786220, 205122086, 410244172, 512805215, 1025610430, 2051220860]

約数ペア:

[(1, 2051220860), (2, 1025610430), (4, 512805215), (5, 410244172), (10, 205122086), (13, 157786220), (20, 102561043), (26, 78893110), (52, 39446555), (65, 31557244), (109, 18818540), (130, 15778622), (218, 9409270), (260, 7889311), (436, 4704635), (545, 3763708), (1090, 1881854), (1417, 1447580), (2180, 940927), (2834, 723790), (5668, 361895), (7085, 289516), (14170, 144758), (28340, 72379)]