18688012

素因数分解:

$2^2\times 7^3\times {\mathrm{53}}^1\times {\mathrm{257}}^1$

素因数の和:335

約数の個数: 48

約数和(自身を含む): 39009600

約数和(自身を除く): 20321588

約数列:

[1, 2, 4, 7, 14, 28, 49, 53, 98, 106, 196, 212, 257, 343, 371, 514, 686, 742, 1028, 1372, 1484, 1799, 2597, 3598, 5194, 7196, 10388, 12593, 13621, 18179, 25186, 27242, 36358, 50372, 54484, 72716, 88151, 95347, 176302, 190694, 352604, 381388, 667429, 1334858, 2669716, 4672003, 9344006, 18688012]

約数ペア:

[(1, 18688012), (2, 9344006), (4, 4672003), (7, 2669716), (14, 1334858), (28, 667429), (49, 381388), (53, 352604), (98, 190694), (106, 176302), (196, 95347), (212, 88151), (257, 72716), (343, 54484), (371, 50372), (514, 36358), (686, 27242), (742, 25186), (1028, 18179), (1372, 13621), (1484, 12593), (1799, 10388), (2597, 7196), (3598, 5194)]