21394324

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{239}}^1$

素因数の和:412

約数の個数: 48

約数和(自身を含む): 45158400

約数和(自身を除く): 23764076

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 139, 161, 239, 278, 322, 478, 556, 644, 956, 973, 1673, 1946, 3197, 3346, 3892, 5497, 6394, 6692, 10994, 12788, 21988, 22379, 33221, 38479, 44758, 66442, 76958, 89516, 132884, 153916, 232547, 465094, 764083, 930188, 1528166, 3056332, 5348581, 10697162, 21394324]

約数ペア:

[(1, 21394324), (2, 10697162), (4, 5348581), (7, 3056332), (14, 1528166), (23, 930188), (28, 764083), (46, 465094), (92, 232547), (139, 153916), (161, 132884), (239, 89516), (278, 76958), (322, 66442), (478, 44758), (556, 38479), (644, 33221), (956, 22379), (973, 21988), (1673, 12788), (1946, 10994), (3197, 6692), (3346, 6394), (3892, 5497)]