128876255

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{509}}^1\times {\mathrm{641}}^1$

素因数の和:1234

約数の個数: 16

約数和(自身を含む): 157161600

約数和(自身を除く): 28285345

約数列:

[1, 5, 79, 395, 509, 641, 2545, 3205, 40211, 50639, 201055, 253195, 326269, 1631345, 25775251, 128876255]

約数ペア:

[(1, 128876255), (5, 25775251), (79, 1631345), (395, 326269), (509, 253195), (641, 201055), (2545, 50639), (3205, 40211)]