20254880

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1783}}^1$

素因数の和:1869

約数の個数: 48

約数和(自身を含む): 48553344

約数和(自身を除く): 28298464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 142, 160, 284, 355, 568, 710, 1136, 1420, 1783, 2272, 2840, 3566, 5680, 7132, 8915, 11360, 14264, 17830, 28528, 35660, 57056, 71320, 126593, 142640, 253186, 285280, 506372, 632965, 1012744, 1265930, 2025488, 2531860, 4050976, 5063720, 10127440, 20254880]

約数ペア:

[(1, 20254880), (2, 10127440), (4, 5063720), (5, 4050976), (8, 2531860), (10, 2025488), (16, 1265930), (20, 1012744), (32, 632965), (40, 506372), (71, 285280), (80, 253186), (142, 142640), (160, 126593), (284, 71320), (355, 57056), (568, 35660), (710, 28528), (1136, 17830), (1420, 14264), (1783, 11360), (2272, 8915), (2840, 7132), (3566, 5680)]