19969888

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{631}}^1$

素因数の和:707

約数の個数: 48

約数和(自身を含む): 42045696

約数和(自身を除く): 22075808

約数列:

[1, 2, 4, 8, 16, 23, 32, 43, 46, 86, 92, 172, 184, 344, 368, 631, 688, 736, 989, 1262, 1376, 1978, 2524, 3956, 5048, 7912, 10096, 14513, 15824, 20192, 27133, 29026, 31648, 54266, 58052, 108532, 116104, 217064, 232208, 434128, 464416, 624059, 868256, 1248118, 2496236, 4992472, 9984944, 19969888]

約数ペア:

[(1, 19969888), (2, 9984944), (4, 4992472), (8, 2496236), (16, 1248118), (23, 868256), (32, 624059), (43, 464416), (46, 434128), (86, 232208), (92, 217064), (172, 116104), (184, 108532), (344, 58052), (368, 54266), (631, 31648), (688, 29026), (736, 27133), (989, 20192), (1262, 15824), (1376, 14513), (1978, 10096), (2524, 7912), (3956, 5048)]