21128306

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{421}}^1\times {\mathrm{1091}}^1$

素因数の和:1537

約数の個数: 16

約数和(自身を含む): 33179328

約数和(自身を除く): 12051022

約数列:

[1, 2, 23, 46, 421, 842, 1091, 2182, 9683, 19366, 25093, 50186, 459311, 918622, 10564153, 21128306]

約数ペア:

[(1, 21128306), (2, 10564153), (23, 918622), (46, 459311), (421, 50186), (842, 25093), (1091, 19366), (2182, 9683)]