861042380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{205991}}^1$

素因数の和:206030

約数の個数: 48

約数和(自身を含む): 2076399360

約数和(自身を除く): 1215356980

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 205991, 411982, 823964, 1029955, 2059910, 2265901, 3913829, 4119820, 4531802, 7827658, 9063604, 11329505, 15655316, 19569145, 22659010, 39138290, 43052119, 45318020, 78276580, 86104238, 172208476, 215260595, 430521190, 861042380]

約数ペア:

[(1, 861042380), (2, 430521190), (4, 215260595), (5, 172208476), (10, 86104238), (11, 78276580), (19, 45318020), (20, 43052119), (22, 39138290), (38, 22659010), (44, 19569145), (55, 15655316), (76, 11329505), (95, 9063604), (110, 7827658), (190, 4531802), (209, 4119820), (220, 3913829), (380, 2265901), (418, 2059910), (836, 1029955), (1045, 823964), (2090, 411982), (4180, 205991)]