51985840

素因数分解:

$2^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{4139}}^1$

素因数の和:4309

約数の個数: 40

約数和(自身を含む): 121666320

約数和(自身を除く): 69680480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 157, 314, 628, 785, 1256, 1570, 2512, 3140, 4139, 6280, 8278, 12560, 16556, 20695, 33112, 41390, 66224, 82780, 165560, 331120, 649823, 1299646, 2599292, 3249115, 5198584, 6498230, 10397168, 12996460, 25992920, 51985840]

約数ペア:

[(1, 51985840), (2, 25992920), (4, 12996460), (5, 10397168), (8, 6498230), (10, 5198584), (16, 3249115), (20, 2599292), (40, 1299646), (80, 649823), (157, 331120), (314, 165560), (628, 82780), (785, 66224), (1256, 41390), (1570, 33112), (2512, 20695), (3140, 16556), (4139, 12560), (6280, 8278)]