20720608

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{599}}^1$

素因数の和:679

約数の個数: 48

約数和(自身を含む): 43545600

約数和(自身を除く): 22824992

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 47, 92, 94, 184, 188, 368, 376, 599, 736, 752, 1081, 1198, 1504, 2162, 2396, 4324, 4792, 8648, 9584, 13777, 17296, 19168, 27554, 28153, 34592, 55108, 56306, 110216, 112612, 220432, 225224, 440864, 450448, 647519, 900896, 1295038, 2590076, 5180152, 10360304, 20720608]

約数ペア:

[(1, 20720608), (2, 10360304), (4, 5180152), (8, 2590076), (16, 1295038), (23, 900896), (32, 647519), (46, 450448), (47, 440864), (92, 225224), (94, 220432), (184, 112612), (188, 110216), (368, 56306), (376, 55108), (599, 34592), (736, 28153), (752, 27554), (1081, 19168), (1198, 17296), (1504, 13777), (2162, 9584), (2396, 8648), (4324, 4792)]