21687400

素因数分解:

$2^3\times 5^2\times 7^2\times {\mathrm{2213}}^1$

素因数の和:2243

約数の個数: 72

約数和(自身を含む): 58682070

約数和(自身を除く): 36994670

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 49, 50, 56, 70, 98, 100, 140, 175, 196, 200, 245, 280, 350, 392, 490, 700, 980, 1225, 1400, 1960, 2213, 2450, 4426, 4900, 8852, 9800, 11065, 15491, 17704, 22130, 30982, 44260, 55325, 61964, 77455, 88520, 108437, 110650, 123928, 154910, 216874, 221300, 309820, 387275, 433748, 442600, 542185, 619640, 774550, 867496, 1084370, 1549100, 2168740, 2710925, 3098200, 4337480, 5421850, 10843700, 21687400]

約数ペア:

[(1, 21687400), (2, 10843700), (4, 5421850), (5, 4337480), (7, 3098200), (8, 2710925), (10, 2168740), (14, 1549100), (20, 1084370), (25, 867496), (28, 774550), (35, 619640), (40, 542185), (49, 442600), (50, 433748), (56, 387275), (70, 309820), (98, 221300), (100, 216874), (140, 154910), (175, 123928), (196, 110650), (200, 108437), (245, 88520), (280, 77455), (350, 61964), (392, 55325), (490, 44260), (700, 30982), (980, 22130), (1225, 17704), (1400, 15491), (1960, 11065), (2213, 9800), (2450, 8852), (4426, 4900)]