20988856

素因数分解:

$2^3\times 7^3\times {\mathrm{7649}}^1$

素因数の和:7676

約数の個数: 32

約数和(自身を含む): 45900000

約数和(自身を除く): 24911144

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 343, 392, 686, 1372, 2744, 7649, 15298, 30596, 53543, 61192, 107086, 214172, 374801, 428344, 749602, 1499204, 2623607, 2998408, 5247214, 10494428, 20988856]

約数ペア:

[(1, 20988856), (2, 10494428), (4, 5247214), (7, 2998408), (8, 2623607), (14, 1499204), (28, 749602), (49, 428344), (56, 374801), (98, 214172), (196, 107086), (343, 61192), (392, 53543), (686, 30596), (1372, 15298), (2744, 7649)]