21348184

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{18661}}^1$

素因数の和:18691

約数の個数: 32

約数和(自身を含む): 47028240

約数和(自身を除く): 25680056

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 286, 572, 1144, 18661, 37322, 74644, 149288, 205271, 242593, 410542, 485186, 821084, 970372, 1642168, 1940744, 2668523, 5337046, 10674092, 21348184]

約数ペア:

[(1, 21348184), (2, 10674092), (4, 5337046), (8, 2668523), (11, 1940744), (13, 1642168), (22, 970372), (26, 821084), (44, 485186), (52, 410542), (88, 242593), (104, 205271), (143, 149288), (286, 74644), (572, 37322), (1144, 18661)]