21204512

素因数分解:

$2^5\times 7^1\times {\mathrm{181}}^1\times {\mathrm{523}}^1$

素因数の和:721

約数の個数: 48

約数和(自身を含む): 48065472

約数和(自身を除く): 26860960

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 181, 224, 362, 523, 724, 1046, 1267, 1448, 2092, 2534, 2896, 3661, 4184, 5068, 5792, 7322, 8368, 10136, 14644, 16736, 20272, 29288, 40544, 58576, 94663, 117152, 189326, 378652, 662641, 757304, 1325282, 1514608, 2650564, 3029216, 5301128, 10602256, 21204512]

約数ペア:

[(1, 21204512), (2, 10602256), (4, 5301128), (7, 3029216), (8, 2650564), (14, 1514608), (16, 1325282), (28, 757304), (32, 662641), (56, 378652), (112, 189326), (181, 117152), (224, 94663), (362, 58576), (523, 40544), (724, 29288), (1046, 20272), (1267, 16736), (1448, 14644), (2092, 10136), (2534, 8368), (2896, 7322), (3661, 5792), (4184, 5068)]