21351260

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21787}}^1$

素因数の和:21810

約数の個数: 36

約数和(自身を含む): 52160472

約数和(自身を除く): 30809212

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21787, 43574, 87148, 108935, 152509, 217870, 305018, 435740, 610036, 762545, 1067563, 1525090, 2135126, 3050180, 4270252, 5337815, 10675630, 21351260]

約数ペア:

[(1, 21351260), (2, 10675630), (4, 5337815), (5, 4270252), (7, 3050180), (10, 2135126), (14, 1525090), (20, 1067563), (28, 762545), (35, 610036), (49, 435740), (70, 305018), (98, 217870), (140, 152509), (196, 108935), (245, 87148), (490, 43574), (980, 21787)]