81423760

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{1381}}^1$

素因数の和:1472

約数の個数: 80

約数和(自身を含む): 209754432

約数和(自身を除く): 128330672

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 67, 80, 88, 110, 134, 176, 220, 268, 335, 440, 536, 670, 737, 880, 1072, 1340, 1381, 1474, 2680, 2762, 2948, 3685, 5360, 5524, 5896, 6905, 7370, 11048, 11792, 13810, 14740, 15191, 22096, 27620, 29480, 30382, 55240, 58960, 60764, 75955, 92527, 110480, 121528, 151910, 185054, 243056, 303820, 370108, 462635, 607640, 740216, 925270, 1017797, 1215280, 1480432, 1850540, 2035594, 3701080, 4071188, 5088985, 7402160, 8142376, 10177970, 16284752, 20355940, 40711880, 81423760]

約数ペア:

[(1, 81423760), (2, 40711880), (4, 20355940), (5, 16284752), (8, 10177970), (10, 8142376), (11, 7402160), (16, 5088985), (20, 4071188), (22, 3701080), (40, 2035594), (44, 1850540), (55, 1480432), (67, 1215280), (80, 1017797), (88, 925270), (110, 740216), (134, 607640), (176, 462635), (220, 370108), (268, 303820), (335, 243056), (440, 185054), (536, 151910), (670, 121528), (737, 110480), (880, 92527), (1072, 75955), (1340, 60764), (1381, 58960), (1474, 55240), (2680, 30382), (2762, 29480), (2948, 27620), (3685, 22096), (5360, 15191), (5524, 14740), (5896, 13810), (6905, 11792), (7370, 11048)]