644421869

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{197}}^1\times {\mathrm{349}}^1$

素因数の和:669

約数の個数: 32

約数和(自身を含む): 807206400

約数和(自身を除く): 162784531

約数列:

[1, 7, 13, 91, 103, 197, 349, 721, 1339, 1379, 2443, 2561, 4537, 9373, 17927, 20291, 31759, 35947, 68753, 142037, 251629, 263783, 467311, 481271, 893789, 1846481, 3271177, 6256523, 7081559, 49570913, 92060267, 644421869]

約数ペア:

[(1, 644421869), (7, 92060267), (13, 49570913), (91, 7081559), (103, 6256523), (197, 3271177), (349, 1846481), (721, 893789), (1339, 481271), (1379, 467311), (2443, 263783), (2561, 251629), (4537, 142037), (9373, 68753), (17927, 35947), (20291, 31759)]