28418785

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^2\times {\mathrm{83}}^1$

素因数の和:213

約数の個数: 24

約数和(自身を含む): 36400896

約数和(自身を除く): 7982111

約数列:

[1, 5, 31, 47, 83, 155, 235, 415, 1457, 2209, 2573, 3901, 7285, 11045, 12865, 19505, 68479, 120931, 183347, 342395, 604655, 916735, 5683757, 28418785]

約数ペア:

[(1, 28418785), (5, 5683757), (31, 916735), (47, 604655), (83, 342395), (155, 183347), (235, 120931), (415, 68479), (1457, 19505), (2209, 12865), (2573, 11045), (3901, 7285)]