199974100

素因数分解:

$2^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{22469}}^1$

素因数の和:22572

約数の個数: 36

約数和(自身を含む): 438839100

約数和(自身を除く): 238865000

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 89, 100, 178, 356, 445, 890, 1780, 2225, 4450, 8900, 22469, 44938, 89876, 112345, 224690, 449380, 561725, 1123450, 1999741, 2246900, 3999482, 7998964, 9998705, 19997410, 39994820, 49993525, 99987050, 199974100]

約数ペア:

[(1, 199974100), (2, 99987050), (4, 49993525), (5, 39994820), (10, 19997410), (20, 9998705), (25, 7998964), (50, 3999482), (89, 2246900), (100, 1999741), (178, 1123450), (356, 561725), (445, 449380), (890, 224690), (1780, 112345), (2225, 89876), (4450, 44938), (8900, 22469)]