20309128

素因数分解:

$2^3\times 7^2\times {\mathrm{103}}^1\times {\mathrm{503}}^1$

素因数の和:626

約数の個数: 48

約数和(自身を含む): 44815680

約数和(自身を除く): 24506552

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 103, 196, 206, 392, 412, 503, 721, 824, 1006, 1442, 2012, 2884, 3521, 4024, 5047, 5768, 7042, 10094, 14084, 20188, 24647, 28168, 40376, 49294, 51809, 98588, 103618, 197176, 207236, 362663, 414472, 725326, 1450652, 2538641, 2901304, 5077282, 10154564, 20309128]

約数ペア:

[(1, 20309128), (2, 10154564), (4, 5077282), (7, 2901304), (8, 2538641), (14, 1450652), (28, 725326), (49, 414472), (56, 362663), (98, 207236), (103, 197176), (196, 103618), (206, 98588), (392, 51809), (412, 49294), (503, 40376), (721, 28168), (824, 24647), (1006, 20188), (1442, 14084), (2012, 10094), (2884, 7042), (3521, 5768), (4024, 5047)]