28364120

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{5413}}^1$

素因数の和:5555

約数の個数: 32

約数和(自身を含む): 64318320

約数和(自身を除く): 35954200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 5240, 5413, 10826, 21652, 27065, 43304, 54130, 108260, 216520, 709103, 1418206, 2836412, 3545515, 5672824, 7091030, 14182060, 28364120]

約数ペア:

[(1, 28364120), (2, 14182060), (4, 7091030), (5, 5672824), (8, 3545515), (10, 2836412), (20, 1418206), (40, 709103), (131, 216520), (262, 108260), (524, 54130), (655, 43304), (1048, 27065), (1310, 21652), (2620, 10826), (5240, 5413)]