21357368

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1979}}^1$

素因数の和:2075

約数の個数: 32

約数和(自身を含む): 42768000

約数和(自身を除く): 21410632

約数列:

[1, 2, 4, 8, 19, 38, 71, 76, 142, 152, 284, 568, 1349, 1979, 2698, 3958, 5396, 7916, 10792, 15832, 37601, 75202, 140509, 150404, 281018, 300808, 562036, 1124072, 2669671, 5339342, 10678684, 21357368]

約数ペア:

[(1, 21357368), (2, 10678684), (4, 5339342), (8, 2669671), (19, 1124072), (38, 562036), (71, 300808), (76, 281018), (142, 150404), (152, 140509), (284, 75202), (568, 37601), (1349, 15832), (1979, 10792), (2698, 7916), (3958, 5396)]