20581120

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{2297}}^1$

素因数の和:2325

約数の個数: 72

約数和(自身を含む): 56365344

約数和(自身を除く): 35784224

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 560, 640, 896, 1120, 1280, 1792, 2240, 2297, 4480, 4594, 8960, 9188, 11485, 16079, 18376, 22970, 32158, 36752, 45940, 64316, 73504, 80395, 91880, 128632, 147008, 160790, 183760, 257264, 294016, 321580, 367520, 514528, 588032, 643160, 735040, 1029056, 1286320, 1470080, 2058112, 2572640, 2940160, 4116224, 5145280, 10290560, 20581120]

約数ペア:

[(1, 20581120), (2, 10290560), (4, 5145280), (5, 4116224), (7, 2940160), (8, 2572640), (10, 2058112), (14, 1470080), (16, 1286320), (20, 1029056), (28, 735040), (32, 643160), (35, 588032), (40, 514528), (56, 367520), (64, 321580), (70, 294016), (80, 257264), (112, 183760), (128, 160790), (140, 147008), (160, 128632), (224, 91880), (256, 80395), (280, 73504), (320, 64316), (448, 45940), (560, 36752), (640, 32158), (896, 22970), (1120, 18376), (1280, 16079), (1792, 11485), (2240, 9188), (2297, 8960), (4480, 4594)]