19987996

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{13469}}^1$

素因数の和:13533

約数の個数: 24

約数和(自身を含む): 40733280

約数和(自身を除く): 20745284

約数列:

[1, 2, 4, 7, 14, 28, 53, 106, 212, 371, 742, 1484, 13469, 26938, 53876, 94283, 188566, 377132, 713857, 1427714, 2855428, 4996999, 9993998, 19987996]

約数ペア:

[(1, 19987996), (2, 9993998), (4, 4996999), (7, 2855428), (14, 1427714), (28, 713857), (53, 377132), (106, 188566), (212, 94283), (371, 53876), (742, 26938), (1484, 13469)]