21388928

素因数分解:

$2^7\times {\mathrm{11}}^2\times {\mathrm{1381}}^1$

素因数の和:1417

約数の個数: 48

約数和(自身を含む): 46870530

約数和(自身を除く): 25481602

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 121, 128, 176, 242, 352, 484, 704, 968, 1381, 1408, 1936, 2762, 3872, 5524, 7744, 11048, 15191, 15488, 22096, 30382, 44192, 60764, 88384, 121528, 167101, 176768, 243056, 334202, 486112, 668404, 972224, 1336808, 1944448, 2673616, 5347232, 10694464, 21388928]

約数ペア:

[(1, 21388928), (2, 10694464), (4, 5347232), (8, 2673616), (11, 1944448), (16, 1336808), (22, 972224), (32, 668404), (44, 486112), (64, 334202), (88, 243056), (121, 176768), (128, 167101), (176, 121528), (242, 88384), (352, 60764), (484, 44192), (704, 30382), (968, 22096), (1381, 15488), (1408, 15191), (1936, 11048), (2762, 7744), (3872, 5524)]