21131648

素因数分解:

$2^7\times {\mathrm{19}}^1\times {\mathrm{8689}}^1$

素因数の和:8722

約数の個数: 32

約数和(自身を含む): 44319000

約数和(自身を除く): 23187352

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 304, 608, 1216, 2432, 8689, 17378, 34756, 69512, 139024, 165091, 278048, 330182, 556096, 660364, 1112192, 1320728, 2641456, 5282912, 10565824, 21131648]

約数ペア:

[(1, 21131648), (2, 10565824), (4, 5282912), (8, 2641456), (16, 1320728), (19, 1112192), (32, 660364), (38, 556096), (64, 330182), (76, 278048), (128, 165091), (152, 139024), (304, 69512), (608, 34756), (1216, 17378), (2432, 8689)]