21568144

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{1069}}^1$

素因数の和:1187

約数の個数: 40

約数和(自身を含む): 45509240

約数和(自身を除く): 23941096

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 97, 104, 194, 208, 388, 776, 1069, 1261, 1552, 2138, 2522, 4276, 5044, 8552, 10088, 13897, 17104, 20176, 27794, 55588, 103693, 111176, 207386, 222352, 414772, 829544, 1348009, 1659088, 2696018, 5392036, 10784072, 21568144]

約数ペア:

[(1, 21568144), (2, 10784072), (4, 5392036), (8, 2696018), (13, 1659088), (16, 1348009), (26, 829544), (52, 414772), (97, 222352), (104, 207386), (194, 111176), (208, 103693), (388, 55588), (776, 27794), (1069, 20176), (1261, 17104), (1552, 13897), (2138, 10088), (2522, 8552), (4276, 5044)]