21068800

素因数分解:

$2^{10}\times 5^2\times {\mathrm{823}}^1$

素因数の和:853

約数の個数: 66

約数和(自身を含む): 52288568

約数和(自身を除く): 31219768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 512, 640, 800, 823, 1024, 1280, 1600, 1646, 2560, 3200, 3292, 4115, 5120, 6400, 6584, 8230, 12800, 13168, 16460, 20575, 25600, 26336, 32920, 41150, 52672, 65840, 82300, 105344, 131680, 164600, 210688, 263360, 329200, 421376, 526720, 658400, 842752, 1053440, 1316800, 2106880, 2633600, 4213760, 5267200, 10534400, 21068800]

約数ペア:

[(1, 21068800), (2, 10534400), (4, 5267200), (5, 4213760), (8, 2633600), (10, 2106880), (16, 1316800), (20, 1053440), (25, 842752), (32, 658400), (40, 526720), (50, 421376), (64, 329200), (80, 263360), (100, 210688), (128, 164600), (160, 131680), (200, 105344), (256, 82300), (320, 65840), (400, 52672), (512, 41150), (640, 32920), (800, 26336), (823, 25600), (1024, 20575), (1280, 16460), (1600, 13168), (1646, 12800), (2560, 8230), (3200, 6584), (3292, 6400), (4115, 5120)]