8474020

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{661}}^1$

素因数の和:1311

約数の個数: 24

約数和(自身を含む): 17850168

約数和(自身を除く): 9376148

約数列:

[1, 2, 4, 5, 10, 20, 641, 661, 1282, 1322, 2564, 2644, 3205, 3305, 6410, 6610, 12820, 13220, 423701, 847402, 1694804, 2118505, 4237010, 8474020]

約数ペア:

[(1, 8474020), (2, 4237010), (4, 2118505), (5, 1694804), (10, 847402), (20, 423701), (641, 13220), (661, 12820), (1282, 6610), (1322, 6410), (2564, 3305), (2644, 3205)]