256717695

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{4153}}^1$

素因数の和:4491

約数の個数: 32

約数和(自身を含む): 443846592

約数和(自身を除く): 187128897

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 317, 951, 1585, 4121, 4153, 4755, 12363, 12459, 20605, 20765, 53989, 61815, 62295, 161967, 269945, 809835, 1316501, 3949503, 6582505, 17114513, 19747515, 51343539, 85572565, 256717695]

約数ペア:

[(1, 256717695), (3, 85572565), (5, 51343539), (13, 19747515), (15, 17114513), (39, 6582505), (65, 3949503), (195, 1316501), (317, 809835), (951, 269945), (1585, 161967), (4121, 62295), (4153, 61815), (4755, 53989), (12363, 20765), (12459, 20605)]