21991064

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{1667}}^1$

素因数の和:1787

約数の個数: 32

約数和(自身を含む): 44135280

約数和(自身を除く): 22144216

約数列:

[1, 2, 4, 8, 17, 34, 68, 97, 136, 194, 388, 776, 1649, 1667, 3298, 3334, 6596, 6668, 13192, 13336, 28339, 56678, 113356, 161699, 226712, 323398, 646796, 1293592, 2748883, 5497766, 10995532, 21991064]

約数ペア:

[(1, 21991064), (2, 10995532), (4, 5497766), (8, 2748883), (17, 1293592), (34, 646796), (68, 323398), (97, 226712), (136, 161699), (194, 113356), (388, 56678), (776, 28339), (1649, 13336), (1667, 13192), (3298, 6668), (3334, 6596)]