21339964

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{199}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 42336000

約数和(自身を除く): 20996036

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 76, 83, 166, 199, 323, 332, 398, 646, 796, 1292, 1411, 1577, 2822, 3154, 3383, 3781, 5644, 6308, 6766, 7562, 13532, 15124, 16517, 26809, 33034, 53618, 64277, 66068, 107236, 128554, 257108, 280789, 313823, 561578, 627646, 1123156, 1255292, 5334991, 10669982, 21339964]

約数ペア:

[(1, 21339964), (2, 10669982), (4, 5334991), (17, 1255292), (19, 1123156), (34, 627646), (38, 561578), (68, 313823), (76, 280789), (83, 257108), (166, 128554), (199, 107236), (323, 66068), (332, 64277), (398, 53618), (646, 33034), (796, 26809), (1292, 16517), (1411, 15124), (1577, 13532), (2822, 7562), (3154, 6766), (3383, 6308), (3781, 5644)]