21058688

素因数分解:

$2^7\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1237}}^1$

素因数の和:1277

約数の個数: 64

約数和(自身を含む): 50510400

約数和(自身を除く): 29451712

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 64, 76, 112, 128, 133, 152, 224, 266, 304, 448, 532, 608, 896, 1064, 1216, 1237, 2128, 2432, 2474, 4256, 4948, 8512, 8659, 9896, 17024, 17318, 19792, 23503, 34636, 39584, 47006, 69272, 79168, 94012, 138544, 158336, 164521, 188024, 277088, 329042, 376048, 554176, 658084, 752096, 1108352, 1316168, 1504192, 2632336, 3008384, 5264672, 10529344, 21058688]

約数ペア:

[(1, 21058688), (2, 10529344), (4, 5264672), (7, 3008384), (8, 2632336), (14, 1504192), (16, 1316168), (19, 1108352), (28, 752096), (32, 658084), (38, 554176), (56, 376048), (64, 329042), (76, 277088), (112, 188024), (128, 164521), (133, 158336), (152, 138544), (224, 94012), (266, 79168), (304, 69272), (448, 47006), (532, 39584), (608, 34636), (896, 23503), (1064, 19792), (1216, 17318), (1237, 17024), (2128, 9896), (2432, 8659), (2474, 8512), (4256, 4948)]