19947776

素因数分解:

$2^8\times {\mathrm{67}}^1\times {\mathrm{1163}}^1$

素因数の和:1246

約数の個数: 36

約数和(自身を含む): 40446672

約数和(自身を除く): 20498896

約数列:

[1, 2, 4, 8, 16, 32, 64, 67, 128, 134, 256, 268, 536, 1072, 1163, 2144, 2326, 4288, 4652, 8576, 9304, 17152, 18608, 37216, 74432, 77921, 148864, 155842, 297728, 311684, 623368, 1246736, 2493472, 4986944, 9973888, 19947776]

約数ペア:

[(1, 19947776), (2, 9973888), (4, 4986944), (8, 2493472), (16, 1246736), (32, 623368), (64, 311684), (67, 297728), (128, 155842), (134, 148864), (256, 77921), (268, 74432), (536, 37216), (1072, 18608), (1163, 17152), (2144, 9304), (2326, 8576), (4288, 4652)]