21652540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11897}}^1$

素因数の和:11926

約数の個数: 48

約数和(自身を含む): 55968192

約数和(自身を除く): 34315652

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11897, 23794, 47588, 59485, 83279, 118970, 154661, 166558, 237940, 309322, 333116, 416395, 618644, 773305, 832790, 1082627, 1546610, 1665580, 2165254, 3093220, 4330508, 5413135, 10826270, 21652540]

約数ペア:

[(1, 21652540), (2, 10826270), (4, 5413135), (5, 4330508), (7, 3093220), (10, 2165254), (13, 1665580), (14, 1546610), (20, 1082627), (26, 832790), (28, 773305), (35, 618644), (52, 416395), (65, 333116), (70, 309322), (91, 237940), (130, 166558), (140, 154661), (182, 118970), (260, 83279), (364, 59485), (455, 47588), (910, 23794), (1820, 11897)]