20289872

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{2153}}^1$

素因数の和:2211

約数の個数: 40

約数和(自身を含む): 42735360

約数和(自身を除く): 22445488

約数列:

[1, 2, 4, 8, 16, 19, 31, 38, 62, 76, 124, 152, 248, 304, 496, 589, 1178, 2153, 2356, 4306, 4712, 8612, 9424, 17224, 34448, 40907, 66743, 81814, 133486, 163628, 266972, 327256, 533944, 654512, 1067888, 1268117, 2536234, 5072468, 10144936, 20289872]

約数ペア:

[(1, 20289872), (2, 10144936), (4, 5072468), (8, 2536234), (16, 1268117), (19, 1067888), (31, 654512), (38, 533944), (62, 327256), (76, 266972), (124, 163628), (152, 133486), (248, 81814), (304, 66743), (496, 40907), (589, 34448), (1178, 17224), (2153, 9424), (2356, 8612), (4306, 4712)]