20528480

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18329}}^1$

素因数の和:18351

約数の個数: 48

約数和(自身を含む): 55429920

約数和(自身を除く): 34901440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18329, 36658, 73316, 91645, 128303, 146632, 183290, 256606, 293264, 366580, 513212, 586528, 641515, 733160, 1026424, 1283030, 1466320, 2052848, 2566060, 2932640, 4105696, 5132120, 10264240, 20528480]

約数ペア:

[(1, 20528480), (2, 10264240), (4, 5132120), (5, 4105696), (7, 2932640), (8, 2566060), (10, 2052848), (14, 1466320), (16, 1283030), (20, 1026424), (28, 733160), (32, 641515), (35, 586528), (40, 513212), (56, 366580), (70, 293264), (80, 256606), (112, 183290), (140, 146632), (160, 128303), (224, 91645), (280, 73316), (560, 36658), (1120, 18329)]