21149408

素因数分解:

$2^5\times 7^1\times {\mathrm{263}}^1\times {\mathrm{359}}^1$

素因数の和:639

約数の個数: 48

約数和(自身を含む): 47900160

約数和(自身を除く): 26750752

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224, 263, 359, 526, 718, 1052, 1436, 1841, 2104, 2513, 2872, 3682, 4208, 5026, 5744, 7364, 8416, 10052, 11488, 14728, 20104, 29456, 40208, 58912, 80416, 94417, 188834, 377668, 660919, 755336, 1321838, 1510672, 2643676, 3021344, 5287352, 10574704, 21149408]

約数ペア:

[(1, 21149408), (2, 10574704), (4, 5287352), (7, 3021344), (8, 2643676), (14, 1510672), (16, 1321838), (28, 755336), (32, 660919), (56, 377668), (112, 188834), (224, 94417), (263, 80416), (359, 58912), (526, 40208), (718, 29456), (1052, 20104), (1436, 14728), (1841, 11488), (2104, 10052), (2513, 8416), (2872, 7364), (3682, 5744), (4208, 5026)]