20555080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5647}}^1$

素因数の和:5678

約数の個数: 64

約数和(自身を含む): 56931840

約数和(自身を除く): 36376760

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5647, 11294, 22588, 28235, 39529, 45176, 56470, 73411, 79058, 112940, 146822, 158116, 197645, 225880, 293644, 316232, 367055, 395290, 513877, 587288, 734110, 790580, 1027754, 1468220, 1581160, 2055508, 2569385, 2936440, 4111016, 5138770, 10277540, 20555080]

約数ペア:

[(1, 20555080), (2, 10277540), (4, 5138770), (5, 4111016), (7, 2936440), (8, 2569385), (10, 2055508), (13, 1581160), (14, 1468220), (20, 1027754), (26, 790580), (28, 734110), (35, 587288), (40, 513877), (52, 395290), (56, 367055), (65, 316232), (70, 293644), (91, 225880), (104, 197645), (130, 158116), (140, 146822), (182, 112940), (260, 79058), (280, 73411), (364, 56470), (455, 45176), (520, 39529), (728, 28235), (910, 22588), (1820, 11294), (3640, 5647)]