19974890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8087}}^1$

素因数の和:8126

約数の個数: 32

約数和(自身を含む): 40763520

約数和(自身を除く): 20788630

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 8087, 16174, 40435, 80870, 105131, 153653, 210262, 307306, 525655, 768265, 1051310, 1536530, 1997489, 3994978, 9987445, 19974890]

約数ペア:

[(1, 19974890), (2, 9987445), (5, 3994978), (10, 1997489), (13, 1536530), (19, 1051310), (26, 768265), (38, 525655), (65, 307306), (95, 210262), (130, 153653), (190, 105131), (247, 80870), (494, 40435), (1235, 16174), (2470, 8087)]