20687380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1381}}^1$

素因数の和:1504

約数の個数: 48

約数和(自身を含む): 50150016

約数和(自身を除く): 29462636

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 107, 140, 214, 428, 535, 749, 1070, 1381, 1498, 2140, 2762, 2996, 3745, 5524, 6905, 7490, 9667, 13810, 14980, 19334, 27620, 38668, 48335, 96670, 147767, 193340, 295534, 591068, 738835, 1034369, 1477670, 2068738, 2955340, 4137476, 5171845, 10343690, 20687380]

約数ペア:

[(1, 20687380), (2, 10343690), (4, 5171845), (5, 4137476), (7, 2955340), (10, 2068738), (14, 1477670), (20, 1034369), (28, 738835), (35, 591068), (70, 295534), (107, 193340), (140, 147767), (214, 96670), (428, 48335), (535, 38668), (749, 27620), (1070, 19334), (1381, 14980), (1498, 13810), (2140, 9667), (2762, 7490), (2996, 6905), (3745, 5524)]