20001536

素因数分解:

$2^8\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:161

約数の個数: 72

約数和(自身を含む): 43169280

約数和(自身を除く): 23167744

約数列:

[1, 2, 4, 8, 16, 23, 32, 43, 46, 64, 79, 86, 92, 128, 158, 172, 184, 256, 316, 344, 368, 632, 688, 736, 989, 1264, 1376, 1472, 1817, 1978, 2528, 2752, 2944, 3397, 3634, 3956, 5056, 5504, 5888, 6794, 7268, 7912, 10112, 11008, 13588, 14536, 15824, 20224, 27176, 29072, 31648, 54352, 58144, 63296, 78131, 108704, 116288, 126592, 156262, 217408, 232576, 253184, 312524, 434816, 465152, 625048, 869632, 1250096, 2500192, 5000384, 10000768, 20001536]

約数ペア:

[(1, 20001536), (2, 10000768), (4, 5000384), (8, 2500192), (16, 1250096), (23, 869632), (32, 625048), (43, 465152), (46, 434816), (64, 312524), (79, 253184), (86, 232576), (92, 217408), (128, 156262), (158, 126592), (172, 116288), (184, 108704), (256, 78131), (316, 63296), (344, 58144), (368, 54352), (632, 31648), (688, 29072), (736, 27176), (989, 20224), (1264, 15824), (1376, 14536), (1472, 13588), (1817, 11008), (1978, 10112), (2528, 7912), (2752, 7268), (2944, 6794), (3397, 5888), (3634, 5504), (3956, 5056)]