2821240

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{281}}^1$

素因数の和:543

約数の個数: 32

約数和(自身を含む): 6395760

約数和(自身を除く): 3574520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 281, 502, 562, 1004, 1124, 1255, 1405, 2008, 2248, 2510, 2810, 5020, 5620, 10040, 11240, 70531, 141062, 282124, 352655, 564248, 705310, 1410620, 2821240]

約数ペア:

[(1, 2821240), (2, 1410620), (4, 705310), (5, 564248), (8, 352655), (10, 282124), (20, 141062), (40, 70531), (251, 11240), (281, 10040), (502, 5620), (562, 5020), (1004, 2810), (1124, 2510), (1255, 2248), (1405, 2008)]