21210700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{193}}^1$

素因数の和:371

約数の個数: 72

約数和(自身を含む): 53211872

約数和(自身を除く): 32001172

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 157, 175, 193, 314, 350, 386, 628, 700, 772, 785, 965, 1099, 1351, 1570, 1930, 2198, 2702, 3140, 3860, 3925, 4396, 4825, 5404, 5495, 6755, 7850, 9650, 10990, 13510, 15700, 19300, 21980, 27020, 27475, 30301, 33775, 54950, 60602, 67550, 109900, 121204, 135100, 151505, 212107, 303010, 424214, 606020, 757525, 848428, 1060535, 1515050, 2121070, 3030100, 4242140, 5302675, 10605350, 21210700]

約数ペア:

[(1, 21210700), (2, 10605350), (4, 5302675), (5, 4242140), (7, 3030100), (10, 2121070), (14, 1515050), (20, 1060535), (25, 848428), (28, 757525), (35, 606020), (50, 424214), (70, 303010), (100, 212107), (140, 151505), (157, 135100), (175, 121204), (193, 109900), (314, 67550), (350, 60602), (386, 54950), (628, 33775), (700, 30301), (772, 27475), (785, 27020), (965, 21980), (1099, 19300), (1351, 15700), (1570, 13510), (1930, 10990), (2198, 9650), (2702, 7850), (3140, 6755), (3860, 5495), (3925, 5404), (4396, 4825)]