21887912

素因数分解:

$2^3\times {\mathrm{101}}^1\times {\mathrm{103}}^1\times {\mathrm{263}}^1$

素因数の和:473

約数の個数: 32

約数和(自身を含む): 42007680

約数和(自身を除く): 20119768

約数列:

[1, 2, 4, 8, 101, 103, 202, 206, 263, 404, 412, 526, 808, 824, 1052, 2104, 10403, 20806, 26563, 27089, 41612, 53126, 54178, 83224, 106252, 108356, 212504, 216712, 2735989, 5471978, 10943956, 21887912]

約数ペア:

[(1, 21887912), (2, 10943956), (4, 5471978), (8, 2735989), (101, 216712), (103, 212504), (202, 108356), (206, 106252), (263, 83224), (404, 54178), (412, 53126), (526, 41612), (808, 27089), (824, 26563), (1052, 20806), (2104, 10403)]