20781376

素因数分解:

$2^6\times 7^1\times {\mathrm{11}}^1\times {\mathrm{4217}}^1$

素因数の和:4247

約数の個数: 56

約数和(自身を含む): 51425856

約数和(自身を除く): 30644480

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 64, 77, 88, 112, 154, 176, 224, 308, 352, 448, 616, 704, 1232, 2464, 4217, 4928, 8434, 16868, 29519, 33736, 46387, 59038, 67472, 92774, 118076, 134944, 185548, 236152, 269888, 324709, 371096, 472304, 649418, 742192, 944608, 1298836, 1484384, 1889216, 2597672, 2968768, 5195344, 10390688, 20781376]

約数ペア:

[(1, 20781376), (2, 10390688), (4, 5195344), (7, 2968768), (8, 2597672), (11, 1889216), (14, 1484384), (16, 1298836), (22, 944608), (28, 742192), (32, 649418), (44, 472304), (56, 371096), (64, 324709), (77, 269888), (88, 236152), (112, 185548), (154, 134944), (176, 118076), (224, 92774), (308, 67472), (352, 59038), (448, 46387), (616, 33736), (704, 29519), (1232, 16868), (2464, 8434), (4217, 4928)]