2118440

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{251}}^1$

素因数の和:473

約数の個数: 32

約数和(自身を含む): 4808160

約数和(自身を除く): 2689720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 251, 422, 502, 844, 1004, 1055, 1255, 1688, 2008, 2110, 2510, 4220, 5020, 8440, 10040, 52961, 105922, 211844, 264805, 423688, 529610, 1059220, 2118440]

約数ペア:

[(1, 2118440), (2, 1059220), (4, 529610), (5, 423688), (8, 264805), (10, 211844), (20, 105922), (40, 52961), (211, 10040), (251, 8440), (422, 5020), (502, 4220), (844, 2510), (1004, 2110), (1055, 2008), (1255, 1688)]