21197216

素因数分解:

$2^5\times {\mathrm{97}}^1\times {\mathrm{6829}}^1$

素因数の和:6936

約数の個数: 24

約数和(自身を含む): 42168420

約数和(自身を除く): 20971204

約数列:

[1, 2, 4, 8, 16, 32, 97, 194, 388, 776, 1552, 3104, 6829, 13658, 27316, 54632, 109264, 218528, 662413, 1324826, 2649652, 5299304, 10598608, 21197216]

約数ペア:

[(1, 21197216), (2, 10598608), (4, 5299304), (8, 2649652), (16, 1324826), (32, 662413), (97, 218528), (194, 109264), (388, 54632), (776, 27316), (1552, 13658), (3104, 6829)]