21105845104

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{191537}}^1$

素因数の和:191713

約数の個数: 40

約数和(自身を含む): 41896255968

約数和(自身を除く): 20790410864

約数列:

[1, 2, 4, 8, 16, 71, 97, 142, 194, 284, 388, 568, 776, 1136, 1552, 6887, 13774, 27548, 55096, 110192, 191537, 383074, 766148, 1532296, 3064592, 13599127, 18579089, 27198254, 37158178, 54396508, 74316356, 108793016, 148632712, 217586032, 297265424, 1319115319, 2638230638, 5276461276, 10552922552, 21105845104]

約数ペア:

[(1, 21105845104), (2, 10552922552), (4, 5276461276), (8, 2638230638), (16, 1319115319), (71, 297265424), (97, 217586032), (142, 148632712), (194, 108793016), (284, 74316356), (388, 54396508), (568, 37158178), (776, 27198254), (1136, 18579089), (1552, 13599127), (6887, 3064592), (13774, 1532296), (27548, 766148), (55096, 383074), (110192, 191537)]