21012272

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{1153}}^1$

素因数の和:1245

約数の個数: 40

約数和(自身を含む): 43787376

約数和(自身を除く): 22775104

約数列:

[1, 2, 4, 8, 16, 17, 34, 67, 68, 134, 136, 268, 272, 536, 1072, 1139, 1153, 2278, 2306, 4556, 4612, 9112, 9224, 18224, 18448, 19601, 39202, 77251, 78404, 154502, 156808, 309004, 313616, 618008, 1236016, 1313267, 2626534, 5253068, 10506136, 21012272]

約数ペア:

[(1, 21012272), (2, 10506136), (4, 5253068), (8, 2626534), (16, 1313267), (17, 1236016), (34, 618008), (67, 313616), (68, 309004), (134, 156808), (136, 154502), (268, 78404), (272, 77251), (536, 39202), (1072, 19601), (1139, 18448), (1153, 18224), (2278, 9224), (2306, 9112), (4556, 4612)]