21387850

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1051}}^1$

素因数の和:1111

約数の個数: 48

約数和(自身を含む): 44613216

約数和(自身を除く): 23225366

約数列:

[1, 2, 5, 10, 11, 22, 25, 37, 50, 55, 74, 110, 185, 275, 370, 407, 550, 814, 925, 1051, 1850, 2035, 2102, 4070, 5255, 10175, 10510, 11561, 20350, 23122, 26275, 38887, 52550, 57805, 77774, 115610, 194435, 289025, 388870, 427757, 578050, 855514, 972175, 1944350, 2138785, 4277570, 10693925, 21387850]

約数ペア:

[(1, 21387850), (2, 10693925), (5, 4277570), (10, 2138785), (11, 1944350), (22, 972175), (25, 855514), (37, 578050), (50, 427757), (55, 388870), (74, 289025), (110, 194435), (185, 115610), (275, 77774), (370, 57805), (407, 52550), (550, 38887), (814, 26275), (925, 23122), (1051, 20350), (1850, 11561), (2035, 10510), (2102, 10175), (4070, 5255)]