18822992

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{251}}^1$

素因数の和:411

約数の個数: 40

約数和(自身を含む): 37810080

約数和(自身を除く): 18987088

約数列:

[1, 2, 4, 8, 16, 43, 86, 109, 172, 218, 251, 344, 436, 502, 688, 872, 1004, 1744, 2008, 4016, 4687, 9374, 10793, 18748, 21586, 27359, 37496, 43172, 54718, 74992, 86344, 109436, 172688, 218872, 437744, 1176437, 2352874, 4705748, 9411496, 18822992]

約数ペア:

[(1, 18822992), (2, 9411496), (4, 4705748), (8, 2352874), (16, 1176437), (43, 437744), (86, 218872), (109, 172688), (172, 109436), (218, 86344), (251, 74992), (344, 54718), (436, 43172), (502, 37496), (688, 27359), (872, 21586), (1004, 18748), (1744, 10793), (2008, 9374), (4016, 4687)]