55687720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{1889}}^1$

素因数の和:1978

約数の個数: 64

約数和(自身を含む): 138801600

約数和(自身を除く): 83113880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 67, 88, 110, 134, 220, 268, 335, 440, 536, 670, 737, 1340, 1474, 1889, 2680, 2948, 3685, 3778, 5896, 7370, 7556, 9445, 14740, 15112, 18890, 20779, 29480, 37780, 41558, 75560, 83116, 103895, 126563, 166232, 207790, 253126, 415580, 506252, 632815, 831160, 1012504, 1265630, 1392193, 2531260, 2784386, 5062520, 5568772, 6960965, 11137544, 13921930, 27843860, 55687720]

約数ペア:

[(1, 55687720), (2, 27843860), (4, 13921930), (5, 11137544), (8, 6960965), (10, 5568772), (11, 5062520), (20, 2784386), (22, 2531260), (40, 1392193), (44, 1265630), (55, 1012504), (67, 831160), (88, 632815), (110, 506252), (134, 415580), (220, 253126), (268, 207790), (335, 166232), (440, 126563), (536, 103895), (670, 83116), (737, 75560), (1340, 41558), (1474, 37780), (1889, 29480), (2680, 20779), (2948, 18890), (3685, 15112), (3778, 14740), (5896, 9445), (7370, 7556)]