19998464

素因数分解:

$2^8\times {\mathrm{191}}^1\times {\mathrm{409}}^1$

素因数の和:616

約数の個数: 36

約数和(自身を含む): 40225920

約数和(自身を除く): 20227456

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 191, 256, 382, 409, 764, 818, 1528, 1636, 3056, 3272, 6112, 6544, 12224, 13088, 24448, 26176, 48896, 52352, 78119, 104704, 156238, 312476, 624952, 1249904, 2499808, 4999616, 9999232, 19998464]

約数ペア:

[(1, 19998464), (2, 9999232), (4, 4999616), (8, 2499808), (16, 1249904), (32, 624952), (64, 312476), (128, 156238), (191, 104704), (256, 78119), (382, 52352), (409, 48896), (764, 26176), (818, 24448), (1528, 13088), (1636, 12224), (3056, 6544), (3272, 6112)]