138872188

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{397}}^1$

素因数の和:483

約数の個数: 72

約数和(自身を含む): 309847776

約数和(自身を除く): 170975588

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 31, 52, 62, 91, 124, 182, 217, 364, 397, 403, 434, 794, 806, 868, 961, 1588, 1612, 1922, 2779, 2821, 3844, 5161, 5558, 5642, 6727, 10322, 11116, 11284, 12307, 12493, 13454, 20644, 24614, 24986, 26908, 36127, 49228, 49972, 72254, 86149, 87451, 144508, 159991, 172298, 174902, 319982, 344596, 349804, 381517, 639964, 763034, 1119937, 1526068, 2239874, 2670619, 4479748, 4959721, 5341238, 9919442, 10682476, 19838884, 34718047, 69436094, 138872188]

約数ペア:

[(1, 138872188), (2, 69436094), (4, 34718047), (7, 19838884), (13, 10682476), (14, 9919442), (26, 5341238), (28, 4959721), (31, 4479748), (52, 2670619), (62, 2239874), (91, 1526068), (124, 1119937), (182, 763034), (217, 639964), (364, 381517), (397, 349804), (403, 344596), (434, 319982), (794, 174902), (806, 172298), (868, 159991), (961, 144508), (1588, 87451), (1612, 86149), (1922, 72254), (2779, 49972), (2821, 49228), (3844, 36127), (5161, 26908), (5558, 24986), (5642, 24614), (6727, 20644), (10322, 13454), (11116, 12493), (11284, 12307)]