21153412

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{239}}^1$

素因数の和:388

約数の個数: 48

約数和(自身を含む): 44352000

約数和(自身を除く): 23198588

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 109, 116, 203, 218, 239, 406, 436, 478, 763, 812, 956, 1526, 1673, 3052, 3161, 3346, 6322, 6692, 6931, 12644, 13862, 22127, 26051, 27724, 44254, 48517, 52102, 88508, 97034, 104204, 182357, 194068, 364714, 729428, 755479, 1510958, 3021916, 5288353, 10576706, 21153412]

約数ペア:

[(1, 21153412), (2, 10576706), (4, 5288353), (7, 3021916), (14, 1510958), (28, 755479), (29, 729428), (58, 364714), (109, 194068), (116, 182357), (203, 104204), (218, 97034), (239, 88508), (406, 52102), (436, 48517), (478, 44254), (763, 27724), (812, 26051), (956, 22127), (1526, 13862), (1673, 12644), (3052, 6931), (3161, 6692), (3346, 6322)]