16948040

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{661}}^1$

素因数の和:1313

約数の個数: 32

約数和(自身を含む): 38250360

約数和(自身を除く): 21302320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 661, 1282, 1322, 2564, 2644, 3205, 3305, 5128, 5288, 6410, 6610, 12820, 13220, 25640, 26440, 423701, 847402, 1694804, 2118505, 3389608, 4237010, 8474020, 16948040]

約数ペア:

[(1, 16948040), (2, 8474020), (4, 4237010), (5, 3389608), (8, 2118505), (10, 1694804), (20, 847402), (40, 423701), (641, 26440), (661, 25640), (1282, 13220), (1322, 12820), (2564, 6610), (2644, 6410), (3205, 5288), (3305, 5128)]