28853800

素因数分解:

$2^3\times 5^2\times {\mathrm{89}}^1\times {\mathrm{1621}}^1$

素因数の和:1726

約数の個数: 48

約数和(自身を含む): 67880700

約数和(自身を除く): 39026900

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 89, 100, 178, 200, 356, 445, 712, 890, 1621, 1780, 2225, 3242, 3560, 4450, 6484, 8105, 8900, 12968, 16210, 17800, 32420, 40525, 64840, 81050, 144269, 162100, 288538, 324200, 577076, 721345, 1154152, 1442690, 2885380, 3606725, 5770760, 7213450, 14426900, 28853800]

約数ペア:

[(1, 28853800), (2, 14426900), (4, 7213450), (5, 5770760), (8, 3606725), (10, 2885380), (20, 1442690), (25, 1154152), (40, 721345), (50, 577076), (89, 324200), (100, 288538), (178, 162100), (200, 144269), (356, 81050), (445, 64840), (712, 40525), (890, 32420), (1621, 17800), (1780, 16210), (2225, 12968), (3242, 8900), (3560, 8105), (4450, 6484)]