21269227

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{409}}^1$

素因数の和:475

約数の個数: 32

約数和(自身を含む): 28339200

約数和(自身を除く): 7069973

約数列:

[1, 7, 17, 19, 23, 119, 133, 161, 323, 391, 409, 437, 2261, 2737, 2863, 3059, 6953, 7429, 7771, 9407, 48671, 52003, 54397, 65849, 132107, 159919, 178733, 924749, 1119433, 1251131, 3038461, 21269227]

約数ペア:

[(1, 21269227), (7, 3038461), (17, 1251131), (19, 1119433), (23, 924749), (119, 178733), (133, 159919), (161, 132107), (323, 65849), (391, 54397), (409, 52003), (437, 48671), (2261, 9407), (2737, 7771), (2863, 7429), (3059, 6953)]