28304020

素因数分解:

$2^2\times 5^1\times {\mathrm{661}}^1\times {\mathrm{2141}}^1$

素因数の和:2811

約数の個数: 24

約数和(自身を含む): 59556168

約数和(自身を除く): 31252148

約数列:

[1, 2, 4, 5, 10, 20, 661, 1322, 2141, 2644, 3305, 4282, 6610, 8564, 10705, 13220, 21410, 42820, 1415201, 2830402, 5660804, 7076005, 14152010, 28304020]

約数ペア:

[(1, 28304020), (2, 14152010), (4, 7076005), (5, 5660804), (10, 2830402), (20, 1415201), (661, 42820), (1322, 21410), (2141, 13220), (2644, 10705), (3305, 8564), (4282, 6610)]