19969520

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{10853}}^1$

素因数の和:10889

約数の個数: 40

約数和(自身を含む): 48452256

約数和(自身を除く): 28482736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 10853, 21706, 43412, 54265, 86824, 108530, 173648, 217060, 249619, 434120, 499238, 868240, 998476, 1248095, 1996952, 2496190, 3993904, 4992380, 9984760, 19969520]

約数ペア:

[(1, 19969520), (2, 9984760), (4, 4992380), (5, 3993904), (8, 2496190), (10, 1996952), (16, 1248095), (20, 998476), (23, 868240), (40, 499238), (46, 434120), (80, 249619), (92, 217060), (115, 173648), (184, 108530), (230, 86824), (368, 54265), (460, 43412), (920, 21706), (1840, 10853)]