20825840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37189}}^1$

素因数の和:37209

約数の個数: 40

約数和(自身を含む): 55338720

約数和(自身を除く): 34512880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37189, 74378, 148756, 185945, 260323, 297512, 371890, 520646, 595024, 743780, 1041292, 1301615, 1487560, 2082584, 2603230, 2975120, 4165168, 5206460, 10412920, 20825840]

約数ペア:

[(1, 20825840), (2, 10412920), (4, 5206460), (5, 4165168), (7, 2975120), (8, 2603230), (10, 2082584), (14, 1487560), (16, 1301615), (20, 1041292), (28, 743780), (35, 595024), (40, 520646), (56, 371890), (70, 297512), (80, 260323), (112, 185945), (140, 148756), (280, 74378), (560, 37189)]