20552560

素因数分解:

$2^4\times 5^1\times 7^4\times {\mathrm{107}}^1$

素因数の和:148

約数の個数: 100

約数和(自身を含む): 56266488

約数和(自身を除く): 35713928

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 107, 112, 140, 196, 214, 245, 280, 343, 392, 428, 490, 535, 560, 686, 749, 784, 856, 980, 1070, 1372, 1498, 1712, 1715, 1960, 2140, 2401, 2744, 2996, 3430, 3745, 3920, 4280, 4802, 5243, 5488, 5992, 6860, 7490, 8560, 9604, 10486, 11984, 12005, 13720, 14980, 19208, 20972, 24010, 26215, 27440, 29960, 36701, 38416, 41944, 48020, 52430, 59920, 73402, 83888, 96040, 104860, 146804, 183505, 192080, 209720, 256907, 293608, 367010, 419440, 513814, 587216, 734020, 1027628, 1284535, 1468040, 2055256, 2569070, 2936080, 4110512, 5138140, 10276280, 20552560]

約数ペア:

[(1, 20552560), (2, 10276280), (4, 5138140), (5, 4110512), (7, 2936080), (8, 2569070), (10, 2055256), (14, 1468040), (16, 1284535), (20, 1027628), (28, 734020), (35, 587216), (40, 513814), (49, 419440), (56, 367010), (70, 293608), (80, 256907), (98, 209720), (107, 192080), (112, 183505), (140, 146804), (196, 104860), (214, 96040), (245, 83888), (280, 73402), (343, 59920), (392, 52430), (428, 48020), (490, 41944), (535, 38416), (560, 36701), (686, 29960), (749, 27440), (784, 26215), (856, 24010), (980, 20972), (1070, 19208), (1372, 14980), (1498, 13720), (1712, 12005), (1715, 11984), (1960, 10486), (2140, 9604), (2401, 8560), (2744, 7490), (2996, 6860), (3430, 5992), (3745, 5488), (3920, 5243), (4280, 4802)]