217979384

素因数分解:

$2^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{90523}}^1$

素因数の和:90579

約数の個数: 32

約数和(自身を含む): 477966720

約数和(自身を除く): 259987336

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 56, 86, 172, 301, 344, 602, 1204, 2408, 90523, 181046, 362092, 633661, 724184, 1267322, 2534644, 3892489, 5069288, 7784978, 15569956, 27247423, 31139912, 54494846, 108989692, 217979384]

約数ペア:

[(1, 217979384), (2, 108989692), (4, 54494846), (7, 31139912), (8, 27247423), (14, 15569956), (28, 7784978), (43, 5069288), (56, 3892489), (86, 2534644), (172, 1267322), (301, 724184), (344, 633661), (602, 362092), (1204, 181046), (2408, 90523)]